If there is no bonus abuse related with either account, what's the big deal with someone having multiple accounts? I know this thread is not about bonus abuse, but if the person with multiple accounts is not cheating(other than having a 2nd account) why is it illegal?

Most bonuses are given after wagering so if a person is wagering they are not cheating. The other abuse that could be happening is trying to circumvent limits, if a person is not doing that why is having another account illegal?

I don't know if this person was abusing something so my questions are just general questions that puzzle me about the casino industry. OP technically you agreed to the ToS of the casino when you signed up with the second account(or the 1st), so you're kinda screwed. Holydarkness might be talking to them for ya and get something worked out.