First off contact the buyer and ask them what they would like to do.if
it still powers on and is usable you may come to an agreement to sell it
to them at a much lower rate.Otherwise you need to ask them if they wish
to cancel the transaction. Always...
If you digitally delivered the items you can't recover them
unfortunately.also you might want to check those listings I believe they
are in violation of the digitally delivered Goods policy