Bests & Worsts Reviews from Amazon

Recently purchased an online gift card for a friend. When my friend redeemed the gift card the amazon server (shopping cart) failed to use the gift card and charged the full amount of the sale to his credit card. When he called customer service was informed by the rep that the sale had already gone through and since amazon wasn't the seller that he would have to use the gift card on some other purchase. He then requested to talk with a supervisor who told him the same thing and finally after talking to that supervisors supervisor the matter was finally resolved and his credit card credited with the amount of the gift card. All this wasted almost an hour of his time. So, in buying my friend a gift card and him being treated like this, I am first embarrassed to have caused my friend all this bother by buying him a gift in this manner and second, my friend and I (both regular amazon customers) are reconsidering ever using amazon again.