Have you ever asked this question before?
have you been dragged to different telegram groups you have never even heard about?
Me? Yes, my account have been all over the place before. This happened because some people I do not even know kept adding me on different telegram groups for some referral campaign. This is not an acceptable practice for me but many still do it unfortunately.
So is there anything that can be done about this? Yes, there is. If in case you still do not know, you can set the settings of your telegram account. It's quite simple, go to Settings > Privacy and Security > Under Privacy, click "Groups" then choose who can add you.
Hope this helps.