Ingeval die afhaalpunt nie oop is nie, bel ons kliëntediens.

Ingeval means in case or if it happens that. It introduces a condition.

In instructions like this, ingeval often sounds a bit more formal or official than plain as. So the sentence is setting up a situation: if that situation occurs, do the action in the main clause.

Afrikaans normally uses a double negative.

A very common pattern is:

• first nie somewhere near the part being negated
• second nie at the end of the clause

So here:

• nie oop = not open
• final nie closes the negative clause

Compare:

• Die afhaalpunt is oop. = The pickup point is open.
• Die afhaalpunt is nie oop nie. = The pickup point is not open.

Because ingeval introduces a subordinate clause. In Afrikaans, the finite verb often moves to the end in subordinate clauses.

So:

• main clause: Die afhaalpunt is nie oop nie.
• subordinate clause: Ingeval die afhaalpunt nie oop is nie ...

That final is is a very typical Afrikaans word-order feature after words like ingeval, as, omdat, dat, and indien.

It is a compound noun:

• afhaal = pick up / collect
• punt = point

So afhaalpunt literally means pickup point or collection point.

Afrikaans forms compounds very freely, much like Dutch and German, so long nouns like this are very common.

Because oop is the normal adjective meaning open.

Afrikaans usually says:

• Die winkel is oop.
• Die deur is oop.
• Die afhaalpunt is oop.

That is the normal way to describe the state of something. Using geopen here would not sound natural for everyday Afrikaans.

Because this is an imperative: a command or instruction.

In Afrikaans, commands often use just the verb by itself:

• Bel ons kliëntediens. = Call our customer service.
• Wag hier. = Wait here.
• Kom in. = Come in.

The subject jy is usually omitted because it is understood.

Here it means our customer service.

That is because ons comes directly before the noun kliëntediens, so it is working as a possessive:

• ons huis = our house
• ons motor = our car
• ons kliëntediens = our customer service

Afrikaans ons can also mean us, but not in this structure.

Yes, absolutely.

As is the ordinary everyday word for if.
So this version is also correct and natural.

The difference is mainly one of tone:

• as = ordinary, very common
• ingeval = more like in case / if it happens that, often a bit more formal
• indien = also if, but usually more formal or written

Because the sentence starts with a subordinate clause:

• Ingeval die afhaalpunt nie oop is nie, = conditional part
• bel ons kliëntediens. = main instruction

Afrikaans normally separates that opening clause from the main clause with a comma. This is very similar to English punctuation in sentences like If the store is closed, call customer service.

Die is the definite article, meaning the.

So die afhaalpunt means the pickup point.

A useful thing for English speakers: Afrikaans uses die much more simply than many European languages. It does not change for grammatical gender the way articles do in languages like German or French.

The two dots in kliënt- show that the vowels are pronounced in separate syllables.

So kliënt is not one smooth vowel sound; it is pronounced as separate syllables, roughly kli-ent.

That spelling mark helps you avoid merging the vowels together. In other words, the dots are there to guide pronunciation, not to change the meaning.

As an independent statement, it would be:

Die afhaalpunt is nie oop nie.

That is useful to compare with the sentence you were given:

• independent clause: Die afhaalpunt is nie oop nie.
• subordinate clause after ingeval: Ingeval die afhaalpunt nie oop is nie ...

This comparison helps you see both key features at once:

• the double negative
• the verb moving to the end in the subordinate clause