Try going on a computer if possible -- Change or remove your Apple ID payment information - Apple Support.
Apple Event: May 7th at 7 am PT
2 replies
If necessary, contact iTunes Support. Scroll to the bottom of the page in the 2nd link.
Apple ID payment info Can’t be removed, i have nit purchased any apps. and now they are asking to verify payment info to buy free apps as well. i just want to get rid of this issue