Telegram Phone Number Banned - Cannot Login Account

I am a Jio mobile user in India and I use the phone number 918667614*** for my Telegram account. A few days ago, when I tried to log in to Telegram, I was informed that my number is banned and I can no longer access my account. This ban has come as a shock to me, because I was using Telegram only for my normal purposes and I did not receive any prior warning or clear explanation from Telegram. I contacted Telegram support regarding this issue, but so far I have not received any response or clarification. My clear request is that my number be unbanned and my access to Telegram be restored, or at least that I be provided with a clear explanation and review of whatever reason led to this ban.