SMSPva and Twitter

Hi all, when i first tried to verify twitter accounts with SMSPva it worked, but now, after couple of weeks i can no longer verify Accounts using SMSPva. I have tried over 25 numbers, none of them works, at all (unsupported Phone number). Their support staff just tell me to "Keep trying and if they wont work, ban them.". The numbers are Russian and Kazakhstan.

Does anybody else have the same issue?