CashNEtUSA rasing up amount owe without permission Chicago Illinois

I took a loan out from them In Oct of 2008 for 400.00. By the time I was to pay them it went up without my permission to 600.00. They told me everytime I ask for an extension I have to pay a 100.00 service charge. I asked for this to be sent to me in black and white, they would not. Several amounts have been made and all are different, now we are up to 525.00 and last week it was 225.00. I want to have them closed down asap and stop this illegal action against people who are trying to get help.

Phil
Lancaster, Pennsylvania
U.S.A.