Είτε η εξυπηρέτηση πελατών είτε ο ηλεκτρονικός λογαριασμός δείχνει τη χρέωση.

είτε ... είτε ... is the Greek pattern for either ... or ....

It is repeated because Greek normally places είτε before each alternative:

• είτε η εξυπηρέτηση πελατών
• είτε ο ηλεκτρονικός λογαριασμός

So the structure is very parallel and clear. In English, we do the same with either ... or ....

The verb is singular because the sentence presents two alternatives, not a combined subject.

The idea is:

• either customer service shows the charge
• or the electronic account shows the charge

Since each option is singular by itself, Greek commonly uses a singular verb with είτε ... είτε ....

So δείχνει means shows, matching a singular subject.

These are the definite articles the:

• η εξυπηρέτηση
• ο λογαριασμός

Greek uses articles very regularly, often more regularly than English. Here they show that we are talking about specific, identifiable things:

• the customer service
• the electronic account

Also, the articles show gender:

• η = feminine singular nominative
• ο = masculine singular nominative

πελατών is the genitive plural of πελάτες, so it means of customers.

So εξυπηρέτηση πελατών literally means service of customers, which in natural English becomes customer service.

Greek often uses this kind of noun + genitive structure for categories or functions:

• εξυπηρέτηση πελατών = customer service
• κέντρο πόλης = city center
• στάση λεωφορείου = bus stop

You could say των πελατών in some contexts, but that would sound more specific, like the service of the customers. Here the article is omitted because it is a general institutional label: customer service.

πελατών is in the genitive plural.

Its basic form is:

• singular: ο πελάτης
• plural: οι πελάτες
• genitive plural: των πελατών or just πελατών when no article is needed

It is genitive because it depends on εξυπηρέτηση and expresses whose service it is: service of customers, meaning customer service.

Because χρέωση is the direct object of δείχνει.

The sentence is asking who performs the action of showing:

• subject: η εξυπηρέτηση πελατών or ο ηλεκτρονικός λογαριασμός
• verb: δείχνει
• object: τη χρέωση

So χρέωση must be in the accusative case, and the feminine accusative singular article is τη or την, depending on pronunciation and style.

In Modern Greek, the final -ν in την is often dropped before many consonants.

Since χρέωση starts with χ, it is very normal to say and write:

• τη χρέωση

You may also encounter την in other contexts, especially before vowels or certain consonants, and some speakers keep the -ν more often than others. But in this sentence, τη χρέωση is completely standard and natural.

Greek adjectives agree with the nouns they describe in:

• gender
• number
• case

Here:

• λογαριασμός is masculine singular nominative
• ηλεκτρονικός is also masculine singular nominative

That is why they match.

If the noun changed, the adjective would change too. For example:

• ο ηλεκτρονικός λογαριασμός = masculine singular
• η ηλεκτρονική χρέωση = feminine singular
• το ηλεκτρονικό μήνυμα = neuter singular

Yes. Greek word order is more flexible than English because case endings and articles make grammatical roles clearer.

The given order is neutral and natural:

• Είτε η εξυπηρέτηση πελατών είτε ο ηλεκτρονικός λογαριασμός δείχνει τη χρέωση.

But Greek could move parts around for emphasis, especially the object:

• Τη χρέωση δείχνει είτε η εξυπηρέτηση πελατών είτε ο ηλεκτρονικός λογαριασμός.

That said, the original version is the most straightforward for a learner.

Literally, yes:

• ηλεκτρονικός = electronic
• λογαριασμός = account, bill, statement, depending on context

In real Greek, λογαριασμός can mean different things:

• a bank account
• a utility bill
• a restaurant bill
• an online account

So ηλεκτρονικός λογαριασμός can mean something like electronic bill, online account, or e-statement, depending on the situation. The exact meaning comes from context, not from grammar alone.

The dictionary form is δείχνω, meaning to show.

δείχνει is the third person singular present tense, so it means:

• he shows
• she shows
• it shows

In this sentence, it means shows, referring to either one of the two possible subjects.

A few useful present-tense forms are:

• δείχνω = I show
• δείχνεις = you show
• δείχνει = he, she, it shows
• δείχνουμε = we show
• δείχνετε = you all show
• δείχνουν = they show