Please help with this scammer!
 

I have an hosting account with: http://16-8.iicinternet.com/acp
I sent them 2 e-mails asking to cancel my hosting account and stop charging my credit card, but nothing happened my account with them is still active.
Now I know that they are scammers and have fucked many webmasters (I didn't know at the time I signed up with them)

So Im asking you guys what shod I do? I don't want to block my credit card just because of them.
And at the same time I don't know if they will abuse my credit card in any way?

:helpme

Charge back and cancel your credit card and get it reissued.