My Telegram Account Hacked After Sharing Code

I mistakenly shared a code thinking it came from Telegram, and shortly after, unknown people started being added to my account. My account has most likely been hacked. I urgently need my account to be either closed or secured immediately. There have been suspicious activities, including mentions of illegal weapons sales, which I do not accept or condone in any way. I need Telegram to step in and help resolve this immediately, as I refuse to be associated with any criminal activity happening on my account. Please assist me in regaining control or closing the account!