I try to make things easy for my customers and I am lucky that this very rarely happens.
In the 10+ years I’ve been running Liquid Audio, I’ve only ever had two non-paying customers. One is widely known as a bad egg, though I didn’t discover that until after I repaired his turntable. He owes a lot of other people much more than he owes me. The other guy was just very odd and I knew almost from the get-go that I was going to be stuck with his gear.
I understand that not everyone has good intentions but I refuse to let one or two bad eggs spoil things for everyone else.