Unable to update App Stores and unable download and install apps

[Firafire]

I can't to update softwares Apps Stores and can't to connect with iTunes stores which are found in my iPhone but I have an apple id but at review time at the options of choosing countries to match with iTunes Store with billing address for my payment methods my country isn't included so what can I do? And also I can't to download and install any new softwares into my iPhone as I am global or international users out side United States so please support me by those problems and also I don't have any credit cards to purchase any things this is also another my problem and so as much as pissible I need your support widely. With Best Regards!