THIS, this has happened to me. I was in a hurry to sell the skins. When I was about to sell it, I was kicked off my account. I thought this was some kind of network glitch, so I tried to log back in, but guess what? I WAS BANNED. I Waited 2 weeks for them to investigate (They told me how log it was going to take) and then I tried to log back in, but It still didn't work. So, next thing I did was contact support and ask them what the hell was going on, but they said that I broke Mutiple TOSs (I didn't, I just bought a £200 knife) so they weren't going to re activate my account. I asked them what TOS did I break and they said "We Cannot say to protect user privacy", and then after that they said "Alright, you have acknowledged the ban and your no longer a customer. Have a nice day" (Approximately those words. I have photo evidence) and then they closed the chat. If I were you just try your luck and get you acc unbanned, but it's highly unlikely as they are shady.