Family sharing payment method

I can't get my iPad to change my payment method. I understand you can only used the one payment method for family sharing so I left so I could pay for my own stuff. I have add the new payment method on my apple id and am triple check I am not in the family anymore. Yet when I tried to purchase something it still only lets me use the old card that I don't have access too. I went into my settings and the apple id website and the original card and family sharing status are all removed. I also tired resetting my device to see if that would help and that didn't work either. I don't know what else I can do to fix this issue