Telegram Account Stolen Five Months Ago and Still Not Deleted

I use the Telegram application on an Android device, and my account was stolen by another person five months ago. Since then, the account has been completely out of my control, and I fear it may be misused by the person who stole it. I contacted Telegram support through the available support channels to explain that my account had been stolen and that I could no longer access it, but I have not received any response so far. I request that my stolen account be permanently and completely deleted, because I do not have access to it and I do not want anyone else to use it in any way. My account number is 00963947121***.