It's not accepting my payment method its s MasterCard been using it for a while now

By 'not accepting' 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.

If that card used to work on your account then have you tried selecting the 'none' option and re-entering the card's details from scratch ?

Or have you got a different card that you could try, or are iTunes gift cards available in your country (they are not available in all and they are country-specific, they can only be used in their country of issue) ? If iTunes cards are available then you could potentially use them as your payment method.

My won't work at all know. I can't even download free apps coz of it. I put in every right information like I did before it won't. I don't know what to do

Have you tried just logging into the account, not when trying to download something, and seeing if you get the 'none' option so that you can remove the card : Change or remove your Apple ID payment information - Apple Support ? If you can remove it you should be able to download app updates and other free items

I'm trying to put a card information in to pay for the music subscription but it won't let me use my mastercard and I use it all the time at the store so please help and I tunes cards won't work for this kinda thing thank you and have a good nigh

See my first reply on this thread