My phone dont let me download anything because theres a "billing problem with my previous purchase" but i haven't bought anything how am i able to download things again ?

Hi

As there is a billing problem with a previous purchase, follow the instructions here, including checking that your address details fully match those on file with your card issuer / bank:

• Pay an unpaid balance in the iTunes Store - Apple Support
• Change or remove your Apple ID payment information - Apple Support
• Payment methods you can use in the iTunes Store, App Store, and iBooks Store - Apple Support

If you still need help, contact iTunes Support:

Contact - Official Apple Support

Schedule a call from iTunes support at

https://getsupport.apple.com/?caller=home&PRKEYS=

I do not have a gift card what can I do?

Schedule a contact from iTunes using the link I provided above.