If someone wants to change their last name, just let them.
I don't know what it is like in Russia, but here in the US, it isn't a huge deal.
A woman in Russia decided to change her last name when a grocery store called Veniv said that if she changed it to THEIR name, they would pay her every 50,000 Rubles month. That equates to about $900 in USD.
Seems reasonable to me. I mean, who doesn't want to make an extra buck??
So her husband clearly flipped out and decided to pour concrete in her car.
Looks like THAT relationship is DEFINITELY over!