Bests & Worsts Reviews from Amazon

I purchased a kit for a friend as a gift. When my friend tried to register the kit, it kept saying "invalid barcode". After arguing with 23andme, they refused to replace the kit and kept saying it was already refunded (for a different amount than I paid and to a credit card with last 4 digits that I did not have). Nevertheless, 23andMe refuses to replace the kit and Amazon sold me a used kit.