Telegram Account Recovery Stuck Without Access to the Old Number

I can no longer access my Telegram account on my Samsung A05 Android phone. My account is linked to an old phone number to which I have completely lost access, so I cannot receive the SMS or call codes required to log in. Although I have a backup email address registered with my Telegram account, the system does not offer any option to log in or verify my identity using this email. I have two‑step verification activated and I still remember my password correctly, but I cannot get past the login stage because the verification code is only sent to my old phone number. I contacted Telegram support regarding this issue, but I have not received any automated response or ticket number, and no reply has been sent to me. I have been unable to use my account for about a week and this situation is disrupting my communication. My expectation from Telegram support is to enable me to use my registered email address as a secure recovery and verification method, so that the login code can be sent there and my identity can be confirmed without needing access to the old phone number. I request that my account be restored and that an alternative recovery method via email be provided so that similar access problems do not occur in the future.