Condescending Call Centre Agent

I received an abrupt and condescending call from the credit card division, due to a missed payment. I explained that banking app showed otherwise and was advised that the app does show a totally accurate amount of what is due when expressing my view on this matter I was met with a irrelevant, ******** response and then had the phone slammed down in my ear.

As a customer who always pays more than required on my installment and is always up to date, well actually irrespective of what kind of customer I am, the standard of service should at least be at that of treating people with dignity.

Closing my accounts soon...