Unable to settle my outstanding debt.

I have been phoned continuously by Woolworth to settle my credit card account. Which has proven to be impossible as the Woolworth's app does not show the correct outstanding amount and the credit card department has no idea what it is. And to top it all off I've been handed over to a dept collector who has told me that I have to wait a full day before their able to help me. All I want to do is close the account. Woolworth's you have created mas confusion not only in your stores but also among your own departments.