I have always paid my VISA card on time, however, I received my MASTERCARD and activated it on June 23, 2009. On Saturday June 27, 2009 I was denied use and was contacted on Sunday June 28, 2009 and informed that MasterCard had not received my payment (which I had sent to VISA because I never received a bill from MasterCard) and if I did not pay them immediately they would not the credit department and effect my credit they also wanted $15.00 for processing the payment. When I informed them I have paid the bill to VISA they said that had nothing to do with them and I needed to contact VISA myself.
VISA informed me themoney I paid them would be sent to Barclays MasterCard (now I have a credit on my account)
I believe this could be a scam to get an additional $15.00 from hundred (thousands) of card holder being force to convert fro VISA to MASTERCARD