amazon.com amazon is a big s**t! Seattle, Washington

I have placed an order with amazon. I have received some gift cards. When I placed order, amazon asked me to change my password. Once done, I was asked to provide my credit card deatils and was asked to contact with bank. I was surprised as there was no bank involvd and their customer service is just used to sending pre-written replies. Afetr several contacts, I was told that one of the gift card I used has a problem and they have blocked all of my gift cards. Despite several tries, they have not replied even a single email. I am out of $300 due to this. I have earlier listened that they are in the business of selling gift cards and later deny purchases with these gift cards, however I never believed this as they are a big company and how a big business can do this. However I was wrong and understnad people are not wrong about them. They steal people money this way and are able to sell other products at a lower price just due to this. A BIG S**T COMPANY!