One card let you earn points based on purchases and the other offers no interest for 90 days. I'm sorry to hear about your situation, but it's plain as day on their website what the purchasing options are.
I didn't look at their web site when I made the application in the store usinmg their applications. If there is a miscommuncation, it exists at the store where their applications are not clear.
Anyway, I couldn't care less if anyone uses their services. I only want to inform people about what they do. It is evident to me that I am not the only person to have this happen as the MasterCard rep explained. I just do not care for business practices that appear deceitful. I am in a position to pay off this card immediately, but others are not in the same financial shape. These are the poeple who could be burned.