Cannot withdraw

I am a registered customer in INTERACTIVE, my trading account number is 6501208. I earned more than $1,000 in profits. They said that I used multiple accounts to log in under a same IP, which is a violation. But if I log in with multiple accounts and lose money, is it also illegal? Should I get refund under this kind of situation? I can't log in now, so I don't have a picture of the trading record. The customer service has blocked my QQ number, so I can't communicate with them. They only returned the principal to me, but the profit was not given.