I recently sold an item to an individual who after only 7 days filed a non receipt item dispute agaisnt me even though it states 3-14 days for delivery. He then says that it was supose to be shipped out xpresspost when he only paid for expedited. After asking for a partial refund back he has now escalted the dispute into a claim for a full refund. However this time not for non receipt but for item not as described? Is this allowed? Also buyer wants me to send him his refund before he ships the item out to me, should I?