quality paperback book club BOMC Stolen credit card information, made false charges, fraudulently made an account, sent unsolicited items, sent collectors against us Rantoul , Illinois

They obtained our credit info some way and signed us up for their stupid club. Tried to charge our account multiple times but we stopped it via the bank. Had the bank let them know why. They kept sending books and magazines but we wrote 'declined' on the items and sent them back. They kept sending increasingly large bills but we declined. We also stated via their 'customer service' web form not to send us anything and that we don't owe them anything. Now they have a collection agency Alliedintersate threatening to harm our credit. How do you get rid of these rip-off artists?