Your best bet is to contact the company, and get their head Office address. Write to them giving the details of the contract, dates, agreements, etc., and state that you wish to formally recind the agreement(s) fortwhtih, with effect from (today's date). Send it Recorded Delivery, keep a copy, and request an acknowledgement, and confirmation in writing that the contract is cancelled. That should do the trick. If you hear nothing, write again (Rec. Delivery & copy) and advise that you have formally notified termination of the contract, and regard all such contratcs as void and uneforceable. Request an acknowlefgement, and then you can forget about it. These companies are far too busy chasing up people who they can screw money out of, they don;t bother pursuing anyone who has changed their minds, but this will give you some peace of mind.