I have new mail and My MasterCard not accept by the system
IWits new card and activated but why the system not accept it ?
By 'not accept it' you mean ... ? If you are getting an error message then what does it say ?
If it's a debit card then they no longer seem to be accepted in all countries, and even where they are it seems that not all work.
For a card to have a chance of being accepted it needs to be registered to the same name and address (including format and spacing etc) that you have on your iTunes account, and have been issued by a bank in the country where you and your iTunes account are.