If you use a credit card - you instead instruct your credit card company to initiate a transaction with them - and, if you aren't happy, you file a chargeback a

If you use a credit card - you instead instruct your credit card company to initiate a transaction with them - and, if you aren't happy, you file a chargeback and then it's on the vendor to prove that they fulfilled their end of the deal. I've filed about 5 or 6 chargebacks, and, with the exception of a gym membership, (which, admittedly, did have a contract from me stating I would send them a request via registered mail to quit) I've always been successful.