Many languages have the sigular vs plural "you" distinction that is heavily used to indicate degrees of social standing and/or respect, that are utterly lacking in English. When you come to English from those languages, it sounds very blunt and disrespectful initially.

Russian also uses names for this purpose, since we have first + last + patronymic, various combinations of those when addressing someone denote various degrees of familiarity and deference. E.g. first + patronymic is respect for authority or seniority (but sometimes used jokingly); last name alone is very impersonal; first name + plural you is respectful while asserting equal authority; and first name + singular you indicates a more personal relationship (friend or at least close acquaintance). Some combos, like last name + singular you, are outright insulting in and of themselves - curiously, historically that was the combo used by aristocracy to address inferiors. And as conversation develops, it's not uncommon for people to start with the most formal form of address, and gradually dial it down by mutual consent, often implicit.

And, because of all this, addressing someone by name repeatedly over the course of the conversation is more common in Russian than it is in English - because of all that extra meaning attached to it.