To make a long story short - I now have 10 NetSpend cards (500$ each, of course) that I need to cash out. I have no desire to activate each of them using my SSN - I just want to assign a pin and be able to use them to buy MO's.
Hopefully, other newbies will learn from your experience NEVER, EVER buy huge amounts like this unless they've tried a particular instrument at least once or twice. May this serve as warning to others before they go on a buying spree w/o making plans on how to liquidate should something go wrong. For those just starting, best to test with small amounts first.
as to solution for this, I'd go with what Credipig said. You may have to call them to ask for a refund but be prepared to go back and forth with them (waste a lot of time) because it won't take just one call to get your refund. Check feedback/reviews about GD to know other people's experiences in dealing with them. Hopefully, you have $5K as float to pay your CC bills so you don't have to pay fees/interests on them. Good luck!