That's one of the "broken process" things I had in mind when I wrote the above. The text that appears on your customers' credit card statement should clearly i

That's one of the "broken process" things I had in mind when I wrote the above. The text that appears on your customers' credit card statement should clearly identify: - what they actually bought - how to contact you The quickest way is to have your domain name appear there, complete with .com so they know they can simply type it into a browser and get to the bottom of things. Of course, on that page you'll need to have a link they can use to figure out what they've bought from you and get a refund if necessary. There are a dozen little things you can do to reinforce the message that "we don't want your money unless you're amazingly happy". If your customer wants his money back, he'll get it one way or another. If you make it easy to simply reverse the transaction through you, they won't ever need to get their bank involved.