The original poster says they tried three different phone numbers for verification and they did not work. Unfortunately, this seems to be a common problem now with various Russian sites.
I recently had the same problem with Ozon Travel, where I received none of the verification phone calls made to my UK phone number (it used to receive them a few months ago, but this stopped last month). I believe the problem is caused by Western telcos blocking automated calls and texts from Russia as assumed spam.