Yes, I got bored on other posts so I finally decided to come here.
All you have to do with manipulative buyers is manipulate them more and better. Simple. They’ll get mad, you contact CS, you win. Don’t forget to be subtle. A good CS rep, inundated with they are with febrile whining, enjoys a bit of repartee and skill in dispute within the rules.
The really fun ones may even reward you with a gif (Nick. Bob doesn’t do gifs, so Nick is the new CS god. Love Nick, love life.)
Also, your buyer will be sad because you outwitted them, and bad buyers hate being outsmarted by a cheap, lowly worker on a cheap, lowly site which is going to make them a millionaire thru outsourcing.
I don’t think I need to say who the idiot is in that scenario.