बैंक को तुरंत फोन कीजिए।

In this sentence, बैंक को marks the target of the action: the bank is the one being called.

With verbs like फोन करना / फोन कीजिए, Hindi very often uses को for the person or organization receiving the call:

• मुझे फोन कीजिए = Call me.
• डॉक्टर को फोन करो = Call the doctor.
• बैंक को तुरंत फोन कीजिए = Call the bank immediately.

So को here is not exactly the same as English to, but it helps show who is being called.

Hindi commonly uses many borrowed nouns together with करना to make verb-like expressions. Here:

• फोन = phone / phone call
• कीजिए = polite imperative of करना (to do)

So फोन कीजिए literally means something like please do a phone call, but in natural English it simply means please call.

This pattern is very common in Hindi:

• काम कीजिए = do the work
• मदद कीजिए = help
• फोन कीजिए = call

कीजिए is a polite imperative form of करना (to do). It is used when speaking respectfully, formally, or politely.

So:

• कीजिए = please do
• फोन कीजिए = please call

This makes the whole sentence polite and appropriate for formal situations, customer service, instructions, or respectful speech.

They are very close in meaning. Both can be used as polite imperatives of करना.

• फोन कीजिए
• फोन करिए

Both mean please call.

However, कीजिए is often felt to be a little more standard or formal in many teaching contexts. Learners will hear both.

It is polite / formal. The key marker is कीजिए.

Compare:

• फोन कर = very casual, blunt
• फोन करो = informal, used with friends, younger people, etc.
• फोन कीजिए / करिए = polite
• फोन कीजिएगा = often even softer or more courteous in some contexts

So बैंक को तुरंत फोन कीजिए। is appropriate when speaking respectfully.

तुरंत means immediately / right away / at once.

It emphasizes urgency more strongly than just now.

Compare:

• अभी फोन कीजिए = call now
• तुरंत फोन कीजिए = call immediately

Sometimes both can overlap, but तुरंत clearly adds urgency.

Hindi usually puts the verb at the end, so that part is normal.

A very natural order is:

object + adverb + verb

So:

• बैंक को = the bank
• तुरंत = immediately
• फोन कीजिए = please call

Hindi word order is somewhat flexible, so you may also hear things like:

• तुरंत बैंक को फोन कीजिए

That also works. But बैंक को तुरंत फोन कीजिए sounds perfectly natural.

Hindi does not have articles like English a and the.

So बैंक can mean:

• a bank
• the bank

The exact meaning depends on context. In this sentence, the intended meaning is clearly the bank.

Yes, but the form changes depending on what you want to say.

• फोन करना = to call
• फोन कीजिए = please call
• फोन करिए = please call
• फोन करो = call! (informal)
• फोन करें = please call / call (polite or formal-subjunctive style)

So फोन करना is the dictionary-style infinitive, while फोन कीजिए is the actual command/request used here.

बैंक is a borrowing from English bank.

A simple learner-friendly pronunciation guide is:

• बैं sounds roughly like bank without the final k yet
• क adds the final k

So overall it sounds very close to English bank, though adapted to Hindi pronunciation.

The vowel in बैं is nasalized, which is shown by ैं plus the nasal marker.

It is an English borrowing. Hindi uses many everyday loanwords from English, especially for modern objects and actions.

So फोन comes from phone, and Hindi combines it naturally with Hindi grammar:

• फोन करना = to call
• फोन कीजिए = please call
• फोन आया = a call came / there was a call

This kind of mixing is extremely normal in modern Hindi.

A rough word-by-word breakdown is:

• बैंक = bank
• को = object marker / marks the target
• तुरंत = immediately
• फोन = phone / phone call
• कीजिए = please do

So the literal feel is something like:

To the bank immediately phone do, please.

But the natural English meaning is simply:

Please call the bank immediately.