Refunds with sites like Craigslist / Kijiji
I recently sold someone an item on an online garage sale website and they are claiming it doesn't work, the item was in it's original packaging and I explained exatly how I came to get it, am I under an obligation to refund the person?
It's just a cell phone SIM card sold for like $15... I don't have a car and took public transport to meet him (actually he didn't show up the first time we agreed to meet so I've spent about $8 to meet up with him) anyway I'm just fed up with this person and sent him $10 in the mail which I think is fair considering my travel costs. He says he didn't get it and wants a new letter sent with $15 exactly or he's calling the cops.
I was willing to do a partial refund but my understanding was I was under no obligation to do so and since he says my letter was not received where can we go from here?
p.s. if anyone wants to move this to another category feel free, I had no idea where to post it.