Discovery Bank credit card cancellation hidden costs.

Wish I could give zero stars. Cleared my discovery credit card twice in 2 months with huge amounts. Decided to close the account due to the ridiculous interest rates and charges. Account shows zero on the app and this credit card did not have a chance of any interest accruing due to it being paid fully in 2 months and now all of a sudden I have closing costs. Escalated to their accounts department and they are useless. Never again. Will complain on every single social media page I can find.