Fraud Transaction From MBE Fightclub

It seems there is a fraud/scam happening right now with O2 users. Recently I received an SMS about this Fightclub stuff and I never paid attention to it nor click the link. I ignored it and then next is that it already sent me welcome message. I still ignored it because I know it is a fraud/scam message. I did not worry because I did not do anything. To my surprise, I was already charged a membership fee not only 1 but 4 times. That easy, my account has been compromised and was charged directly. I felt the security level is a weak and to me it is very ALARMING!!!!!!!!

I reported right away to O2 via email. They have not responded yet. Let see how it goes. I requested for a refund as well because this is a clear weakness in the security.