Dù chi nhánh đóng cửa, tôi cũng gọi tổng đài.

Dù means although, even though, or even if, depending on context.

In Dù chi nhánh đóng cửa, tôi cũng gọi tổng đài, it introduces a contrast:

• Dù chi nhánh đóng cửa = Even though the branch is closed
• tôi cũng gọi tổng đài = I still call the call center

A very common Vietnamese pattern is:

Dù ..., cũng ...

This often corresponds to English Even though ..., still ... or No matter ..., ... anyway.

Yes, cũng often means also, but in this structure it can mean something closer to still, all the same, or nevertheless.

So here:

• tôi cũng gọi tổng đài

does not mainly mean I also call the call center It means more like:

• I still call the call center
• I call the call center anyway

In the pattern Dù ..., cũng ..., cũng helps mark the idea that the second action happens despite the first fact.

Chi nhánh means branch, usually of a company, bank, business, or organization.

Examples:

• chi nhánh ngân hàng = bank branch
• chi nhánh công ty = company branch

So in this sentence, chi nhánh đóng cửa means the branch is closed.

Literally, yes:

• đóng = close / shut
• cửa = door

But together, đóng cửa very often means to close down for business or to be closed.

So in this sentence, chi nhánh đóng cửa means:

• the branch is closed
• the branch has shut

It does not necessarily focus on the physical door. It usually refers to the business not being open.

Vietnamese often does not need a separate word like English is / are in these kinds of sentences.

So:

• chi nhánh đóng cửa

naturally means:

• the branch is closed
• the branch closes

The exact English translation depends on context, but Vietnamese often leaves this kind of tense/state information to the situation rather than marking it with a verb like to be.

Tổng đài commonly means a call center, switchboard, or hotline service, depending on context.

In everyday modern usage, especially in customer service, it often means:

• call center
• customer service line
• hotline

So gọi tổng đài means:

• call the call center
• call customer support
• call the hotline

The best English translation depends on the situation.

Vietnamese often puts the concession/contrast clause first.

Structure:

• Dù + situation, main clause

So:

• Dù chi nhánh đóng cửa = Even though the branch is closed
• tôi cũng gọi tổng đài = I still call the call center

This is very natural in Vietnamese. It is similar to English:

• Even though the branch is closed, I still call the call center.

You could think of the first part as setting up the obstacle, and the second part as showing what happens anyway.

Sometimes yes, but keeping tôi makes the sentence clear and complete.

Vietnamese often drops subjects when they are obvious from context. So in a conversation, someone might say:

• Dù chi nhánh đóng cửa, cũng gọi tổng đài.

But this can sound more context-dependent or less explicit. With tôi, the meaning is very clear:

• I still call the call center.

For learners, including the subject is usually safest.

Vietnamese verbs do not change form for tense the way English verbs do. So gọi can mean:

• call
• called
• will call

depending on context.

So tôi cũng gọi tổng đài could be understood as:

• I still call the call center
• I called the call center anyway
• I will still call the call center

If you want to make the time clearer, Vietnamese often adds time words or markers like:

• đã for past
• đang for ongoing action
• sẽ for future

Examples:

• Dù chi nhánh đóng cửa, tôi vẫn gọi tổng đài. = I still call / called anyway
• Dù chi nhánh đóng cửa, tôi đã gọi tổng đài. = I called the call center anyway
• Dù chi nhánh đóng cửa, tôi sẽ gọi tổng đài. = I will call the call center anyway

Yes. In many cases, vẫn may sound even more natural if you want to emphasize still.

Compare:

• Dù chi nhánh đóng cửa, tôi cũng gọi tổng đài.
• Dù chi nhánh đóng cửa, tôi vẫn gọi tổng đài.

Both are understandable, but vẫn more directly means still or yet, so many learners will see it more often in this kind of sentence.

Very roughly:

• cũng in this pattern helps express all the same / anyway
• vẫn emphasizes still

In real usage, both can appear, but vẫn is often especially common for the idea of continuing despite a difficulty.

The comma is not always absolutely required in casual writing, but it is very helpful and natural here.

It separates:

• the contrast clause: Dù chi nhánh đóng cửa
• from the main clause: tôi cũng gọi tổng đài

So the comma makes the sentence easier to read, especially for a structure like Dù ..., cũng ....

Yes. Mặc dù also means although / even though and is very common.

So you could say:

• Mặc dù chi nhánh đóng cửa, tôi cũng gọi tổng đài.

This has basically the same meaning.

A few general notes:

• dù is shorter and very common
• mặc dù can sound a little more formal or explicit
• both are correct in this kind of sentence

You may also hear:

• Dù cho ...
• Cho dù ...

These are related forms with a similar meaning.