I wouldn't join a random Telegram and try to Buy/Sell anything. You will get scammed, you will have a headache and your time will be wasted. If you are interested in selling your account on here safely, then I would suggest you post the information, hash-rate, length of contract etc. in a thread on either the Digital Goods section :
https://bitcointalk.org/index.php?board=93.0 , or the Accounts & Invites Section :
https://bitcointalk.org/index.php?board=234.0There are also some safe ways of dealing with people around here, using an escrow is always a must and make sure you don't create an environment where scams are likely. Do not Buy/Sell accounts that can be recovered, do not accept reversible payment methods. Read the stickies, follow guidelines and see if you get any bites for you account.
Seriously, read stickies if this is your first time around here :
https://bitcointalk.org/index.php?topic=1652275.0https://bitcointalk.org/index.php?topic=3629.0https://bitcointalk.org/index.php?topic=133931.0https://bitcointalk.org/index.php?topic=2439910.0