Telegram complaint: Two telegram channels got hacked and i have contacted telegram support But no answer

Hi, my friend’s two telegram channels got hacked and he is not able to retrieve them. The hacker is asking for money in order to give them back. One telegram channel is called avto_yuristlar and it was hacked on 14th of February 2021. The owner is Shamsiddinov Muhriddin tel 998998624353. The other channel is called @yurist_maslahati also hacked same day. Both channels haven’t had any activity since they have been hacked. Second channel – @yurist_maslahati was originally owned by Muhriddin but it was passed on to another person called Nishonov Abdulla 99 891 686 24 02 in august 2020. But they are colleagues and it can be returned to either accounts. Muhriddin or to Abdulla. If possible both channels should be returned to same person Muhriddin. Could you please help us?
I have already used various means to communicate the above, via telegram support webpage, twitter, instagram and i havent received an answer in soon 10 days..