First Premier Bank

I really don’t want this credit anymore, I feel that they are collecting money every month for no apparent reason whether I buy or not, I still have to pay. They increased my spending amount to $700, I missed payment for a few days, they want the whole $ 700 back that I never spent, they constantly calling my phone, they call me 4 times yesterday I just want this credit card cancel. Over the years I have paid so much unnecessary money to this first premier bank credit card, I don’t want any refund I just want to cancel the card.