Telegram complaint: No response regarding transfer of Ownership

We have a group called https:t.meagilecirclesid. Its a community formed by us for the Agile Enthusiasts in Indonesia. It was actually founded by Hugo Messer, but the channel group was created by one of our team member. Due to some conflicts we had to terminate him since he made some serious violation of our policies. Moreover he is not using that phone number also(which is what he is saying when we asked to transfer the ownership). In this regard we don’t have anyone with owner permission at present within the group. So we would like to request you to kindly make me(@anurajsl) or anyone of our admin members as the owner of the group. It is very much required because we are facing a lot of spambot attacks and so we are planning to make the group private. We were trying to reach out for help with Telegram but there is no response anywhere. Please help us with this. Thank You!