I cant buy anything in my apple id!! Why??

i must contact the i tunes supprt ... i dont know what to do

Easy, you contact iTunes support. There is something wrong with your account, and only Apple can handle that. This is a user to user support forum, and no one has access to your account. Use the link provided to get the contact information for your location, or use this link. iTunes Store - Contact Us - Apple Support

If you supplied a credit card, check its details. If not or they're correct, clickhereand ask the iTunes Store staff for assistance.

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