Banned? why?

[Sweet]

Hello!
I have recently gained an account for ingame currency, mostly "cake service" (setting up cakes for client). I found this offer very attractive, so I took my chances. Now I regret it, becouse I have found our (mine and my friends) shared accounts banned for "stealing". Can somebody clear this misunderstanding? One of the chars name is Sweetest (should I type all char names, or account names?)

sincerly
Sweet