500fastcash rip of off loan, Internet

I applied for a $300 loan in this company (500fastcash) last June 2012 then i soon as my payments start July 2012 i pay 2x a month every payday. so i think my loan will be paid off fast because they take my money right away every payday, then 6 months later they still charging  $100+ evey pay check. then i talked to them and asked about my loan what is going on why is never getting paid off, the rep told me they charged $90 everytime i pay them and 60 for charges which don't understand what the rep talking about. instead of helping me they made my problem worst they're milking my account. $300 loan end up 1000+ i hope they can do something about this company because they are rip off and evil. what they doing is not right.