I was wondering if USPS gave refunds? What happened was that a TBer brought strings from me and I shipped them out (to have to returned for being "undeliverable" due to packaging) So to make up for I resent them overnight. That was a week ago, and he still hasn't gotten it. The overnight shipping cost me more than what he bought the strings for. So now what are my options? Should I go to USPS tomorrow and complain, and get a refund (or find out what happened to the strings?!) I still have my reciept. Or, in this case, am I just SOL?