Call the number on the back of the card but, you might have to pay a cancellation fee.
How Do I Cancel My Sears Premier Mastercard?
Go to the back of the card or statement you get there is usually a 1800 numb ber and a web site you can contact
Call the 800 number on the back of the card. If you have a balance they will require that it is paid in full. The number is in very small print.