my apple id is disable because of chargeback

What do you mean by 'chargeback' ? If you can't get the account re-enabled via http://iforgot.apple.com, them try contacting iTunes Support and see if they can enable it : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page

Just for the record I found out why my it would not accept my updated AMEX information. Because of the charge back due to a dispute that I put through my AMEX card when the app company never got back to me on unauthorized charge AMEX was able to get me my credit but then Apple has the right according to them to no longer accept your AMEX card as form of payment. Well this is another reason why I hate APPLE period, I only own a iPad and will never own a iPhone. I told them they have lost me as a client. It's ridiculious that they are going to tell me that I cannot use my AMEX because of a $7.99 charge back. PLEASE don't insult my intelligence.. I am done.

This occurs when Apple receives notification of a charge dispute from your financial institution, whether it be your bank or someone like PayPal.

If this is the case, you will not be able to resolve the issue on your end, but will need to contact iTunes Support directly. The Advisor will have some specific information for you regarding the charge and the continued use of the payment method involved in the charge.