I think many people here only read the headline and immediately start aiding the destruction of what seems to be a single person's business. I have experienced myself how painful it can be to stay polite towards a*hole customers, so as said in some comment: It's totally fine to quit a customer who acts like that and refund him.
I'll just note that this entry was posted twice, by two different accounts, with the same title, even though it does not appear anywhere in the site. PR effort for or against.
I actually did by giving my reasons. Btw, if you are into these kind of theories: ALL my comments in this thread were exactly downvoted the same number.
