I've been selling on eBay - it's more of an addiction than a business, really. I just enjoy finding great clothes on sale. But lately, it's been very stressful and I am thinking of calling it quits. I have more and more buyers responding with rude, unreasonable demands and threats for no reason. I had one guy who was upset that his packaged got delayed by USPS for 2 weeks and started demanding his money back writing something like 'Look retard, give me my money back right now! I am really pissed off.... blah blah" I get more and more of these emails with name calling and stuff like that. What's the right way to deal with this? I tried not responding but then they get more frustrated that they don't receive immediate response. I guess it has to do with the products I sell - they are mostly worn by young guys and many are just immature. I know I am not supposed to take it personally, but I don't know how not to. Any advise?