Quick answer
Меня́ зову́т…
menyá zovút — literally “they call me…”
The options
Why зову́т is plural
Literally the sentence means “they call me Tom” — an unnamed “they”. That is why the verb is in the third person plural and never changes: меня́, тебя́, его́, её зову́т.
What you hear back
Typical mistakes
Мой и́мя Том.
Меня́ зову́т Том.
Grammatically possible, but nobody introduces themselves that way.
Как ты зову́т?
Как тебя́ зову́т?
The person named goes into the accusative: тебя́.
Check yourself
How do you ask a stranger for their name?