It seems to be an uphill battle to register a Telegram account not linked to one's phone number. I tried voip numbers from textverified.com and juicysms.com but the first openly disclose they don't have numbers working for Telegram, and the second service never receive the SMS verification codes. Perhaps this happens because I'm running Telegram inside an emulator instead of physical phone...
So I will pay someone .0007 BTC to register a Telegram account for me using whatever number, then I will ask you to change the phone number to a new number that I'll give you. If you are interested contact me:
dsydney8@proton.meI rented him a number and helped create the account, he paid me everything successfully.