Если кто-либо спросит, почему я всё ещё жду заказ, скажи, что я жду подтверждения выдачи.

In Russian, если often combines with a future meaning when you are talking about a real future possibility.

So:

• Если кто-либо спросит = If anyone asks
• спросит is the perfective future of спросить

This is very normal Russian. After если, Russian does not avoid future forms the way English often does.

Also, спросит is perfective, which suggests one completed act of asking. That fits the situation well: someone may ask once.

Compare:

• если спросит = if someone asks
• если будет спрашивать = if someone keeps asking / will be asking
• если спрашивает = if someone is asking / asks habitually

So спросит is the most natural choice here.

кто-либо means anyone / anybody.

The main difference is style:

• кто-либо = more formal, written, neutral-official
• кто-нибудь = more colloquial and common in everyday speech
• кто-то = someone, usually an unspecified but more concrete person

So:

• Если кто-либо спросит... sounds a bit formal or written
• Если кто-нибудь спросит... would sound more everyday and conversational

A native speaker learning point: кто-либо is not wrong at all, but it sounds less casual than кто-нибудь.

Here всё ещё is a fixed expression meaning still.

So:

• я всё ещё жду = I am still waiting

In this phrase, всё does not literally mean everything. It is just part of the expression.

Common examples:

• Он всё ещё спит. = He is still sleeping.
• Мы всё ещё работаем. = We are still working.

So it is best to learn всё ещё as one unit.

Russian word order is flexible, but some positions sound more natural than others.

всё ещё usually goes before the verb it modifies:

• я всё ещё жду заказ = the natural default order

You can move words around in Russian, but that changes emphasis or makes the sentence sound less neutral.

So:

• я всё ещё жду заказ = neutral, standard
• я жду заказ всё ещё = much less natural in ordinary speech

For learners, the safest pattern is:

• subject + всё ещё + verb

скажи is the imperative singular of сказать.

It means:

• say
• tell

In this sentence it means something like:

• tell them / say that...

Because сказать is perfective, the imperative скажи usually means say it once, as a complete action.

That fits this context: you are asking someone to give a message.

Compare:

• скажи = say/tell it
• говори = speak / keep talking / say (imperfective, process-oriented)

So скажи is the natural choice when you want someone to deliver a piece of information.

Russian often omits subject pronouns when the verb form already makes the subject clear.

Here, скажи already tells you the subject is you singular, informal.

So:

• скажи = you say / tell
• ты скажи = possible, but adds emphasis or contrast

Russian does this very often:

• иду = I’m going
• знаешь = you know
• скажи = say / tell

So the missing ты is completely normal.

This is one of the most useful things to notice in this sentence.

The verb ждать can take either accusative or genitive, depending on the noun and the style/nuance.

1. жду заказ

Here заказ is in the accusative.
This is very common with a specific, concrete thing:

• ждать автобус
• ждать письмо
• ждать заказ

2. жду подтверждения выдачи

Here подтверждения is in the genitive.
Genitive is common with abstract things, especially in more formal language:

• ждать помощи
• ждать ответа
• ждать подтверждения

So the sentence mixes two natural patterns:

• заказ = concrete item → accusative sounds natural
• подтверждения = abstract confirmation → genitive sounds natural

This is not random; it reflects how ждать works in real Russian.

заказ here is accusative singular.

But for many inanimate masculine nouns, the accusative singular looks exactly like the nominative singular.

So:

• nominative: заказ
• accusative: заказ

That is why it looks unchanged.

Compare with an animate masculine noun:

• nominative: брат
• accusative: брата

But with an inanimate noun like заказ, nominative and accusative are the same.

Because two different grammatical relationships are happening at once.

First layer:

жду подтверждения
Here подтверждения is the object of жду, and it is in the genitive.

Second layer:

подтверждение выдачи
Here выдачи depends on подтверждение and means confirmation of issuance / handover / pickup.

Russian often uses the genitive after a noun to mean of ...

So:

• подтверждение чего? → выдачи
• confirmation of what? → of the handover/issuance

So the structure is:

• жду [подтверждения [выдачи]]

That is why both nouns appear in genitive forms.

Here что is a conjunction, not the question word what.

It introduces a clause meaning that:

• скажи, что... = say that...

So:

• скажи, что я жду подтверждения выдачи
• tell them that I am waiting for confirmation of issuance/pickup

This is extremely common in Russian:

• Я знаю, что он дома. = I know that he is home.
• Скажи, что придёшь позже. = Say that you’ll come later.

So in this sentence, что simply links the main verb скажи to the information being reported.

Because Russian normally uses commas to separate subordinate clauses.

The sentence contains several clause boundaries:

Если кто-либо спросит,
This is the end of the if-clause, so there is a comma.

почему я всё ещё жду заказ,
This is another subordinate clause, introduced by почему, so it is also separated by commas.

Then comes the main command:

скажи, что я жду подтверждения выдачи.

So the commas reflect the sentence structure, not pauses in speech only.

A rough structure is:

• Если ... спросит,
• почему ... жду заказ,
• скажи,
• что ... жду подтверждения выдачи.

No, почему and зачем are different.

• почему = why, asking for a reason/cause
• зачем = what for / why, asking for a purpose

Here the meaning is:

• why am I still waiting for the order?
• in other words, what is the reason?

So почему is correct.

If you used зачем, it would sound more like:

• for what purpose am I waiting for the order?

That is not the intended meaning here.

Yes. выдача is a noun from выдать / выдавать and often means:

• issuance
• handing over
• release
• pickup/dispensing

The exact English translation depends on context.

In logistics, shops, and delivery contexts, выдача often refers to the moment when an item is officially handed to the customer.

So подтверждение выдачи means something like:

• confirmation of handover
• confirmation of pickup
• confirmation that the order has been issued

This is a fairly formal, administrative-sounding expression.

It is understandable and correct, but it does sound somewhat formal, especially because of:

• кто-либо
• подтверждения выдачи

A more conversational version might be something like:

• Если кто-нибудь спросит, почему я всё ещё жду заказ, скажи, что жду подтверждение выдачи.

Or even more naturally in some contexts:

• Если кто-нибудь спросит, почему я всё ещё жду заказ, скажи, что ещё не подтвердили выдачу.

So the original sentence is good Russian, but it leans toward a more formal or written style.