A cég fenntartja az ügyfélszolgálatot.

Because Hungarian verbs have two main present-tense conjugation patterns: indefinite and definite.

Here the object is az ügyfélszolgálatot = the customer service, which is a definite object, so Hungarian uses the definite conjugation.

• fenntart = he/she/it maintains something non-specific
• fenntartja = he/she/it maintains it / the specific thing

So in this sentence:

• A cég fenntartja az ügyfélszolgálatot.
• literally: The company maintains the customer service.

The -ja ending shows 3rd person singular definite.

Fenntartja comes from the verb fenntartani, which usually means:

• to maintain
• to keep up
• to keep running
• to sustain
• sometimes to uphold

In this sentence, the most natural sense is something like:

• The company maintains customer service
• The company keeps the customer service running

The verb is made of:

• fenn / fent = up
• tart = hold

So the basic idea is hold up, which developed into maintain or keep in operation.

Because it is the direct object of the sentence, and Hungarian usually marks the direct object with the accusative ending -t.

So:

• ügyfélszolgálat = customer service
• ügyfélszolgálatot = customer service as the object

The full object is:

• az ügyfélszolgálatot

The extra vowel in -ot is there because Hungarian often inserts a linking vowel before the accusative -t when needed for pronunciation.

So it is not just -t, but -ot here:

• ügyfélszolgálat + ot

Hungarian has two forms of the definite article:

• a before a consonant sound
• az before a vowel sound

So:

• a cég because cég starts with c
• az ügyfélszolgálatot because ügyfélszolgálatot starts with ü

This is similar to English a / an, but Hungarian uses the distinction only for the definite article.

Yes. cég means:

• company
• firm
• sometimes business

So:

• A cég = the company

This is the subject of the sentence.

This is a very normal, neutral Hungarian word order:

• A cég = subject
• fenntartja = verb
• az ügyfélszolgálatot = object

So the pattern is basically:

• Subject + Verb + Object

Hungarian word order is more flexible than English, but changes in word order often change emphasis rather than basic meaning.

For example:

• A cég fenntartja az ügyfélszolgálatot.
  Neutral statement.

If you moved things around, you could highlight something:

• Az ügyfélszolgálatot a cég fenntartja.
  Emphasis on the customer service.

So the original sentence is the most straightforward, unmarked version.

It is a compound noun:

• ügyfél = customer / client
• szolgálat = service, duty, service department

Together:

• ügyfélszolgálat = customer service

This kind of compounding is very common in Hungarian. English often uses separate words where Hungarian prefers one compound word.

Because in Hungarian, the verb ending itself often already contains enough information.

In fenntartja, the -ja tells you that:

• the subject is he/she/it (or a singular noun like a cég)
• the verb is in the definite conjugation, so it refers to a definite object

That is why Hungarian does not need an extra pronoun like English it here.

The actual object is then stated explicitly:

• az ügyfélszolgálatot

So the sentence does not sound repetitive to a Hungarian speaker; it is just normal grammar.

Sometimes, depending on context, yes, but maintains or keeps running is more precise.

Fenntart often suggests that something continues to exist or operate:

• maintaining a service
• maintaining an office
• maintaining a system
• maintaining a relationship
• upholding a rule or principle

So in this sentence, it most likely means that the company operates or keeps the customer service department/service available.

A rough guide is:

• ügyfél ≈ uuy-fayl
• szolgálatot ≈ sol-gaa-la-tot

A few useful points:

• ü is a front rounded vowel; English does not have an exact equivalent
• gy is a soft consonant, somewhat like the d in British duke for some speakers, but not exactly
• sz is pronounced like English s
• s by itself in Hungarian is pronounced like English sh
• stress is normally on the first syllable of the word:
  Ügyfélszolgálatot

You do not need perfect pronunciation immediately, but knowing that sz = s and s = sh helps a lot.

Yes:

• fenn / fent = verbal prefix meaning something like up
• tart = hold, keep
• -ja = 3rd person singular definite present-tense ending

So:

• fenntartja = he/she/it maintains it / the specific thing

The dictionary form is:

• fenntartani = to maintain

This is useful because in Hungarian you often learn verbs in the -ni infinitive form, then recognize the conjugated forms in sentences.

It can be understood either way, depending on context.

It may refer to:

• the customer service department
• the customer service operation
• the customer support service as a function the company provides

So Hungarian does not force a sharp distinction here. The sentence simply says that the company maintains/keeps up customer service.