Literally the whole point of this thread is for people to post their bad experiences in order to warn others. If you don't want to hear that kind of thing, IDK maybe don't open the thread? Sounds like the one sobbing is you lol.
If you're adult enough to list something for sale online then you should be adult enough to ship it within a few days, and if there's a problem with that then barring extraordinary circumstances you should be able to communicate any issues to the buyer in a timely manner. If that's too much of a burden for you then you shouldn't be listing stuff for sale online to begin with.
That said I will reiterate to everyone reading this - stop using friends and family with PayPal for transactions with people you've never even met. IDK why this needs to be repeated over and over again but apparently it does.