Not happy

I'm unhappy with the service I received, I had an extension on my service plan and when I took my car for service I was told that my account is not active and pending arrears. In which the mistake was on their side when they didn't debit my account on the 25th December but kept quiet and never called nor emailed me and then continued to debit like normal in Jan and February and all of a sudden I have to be inconvenienced on the day of the service and encounter problems at my workplace for coming late because of the incompetence from your side. Luckily Sidney and Karabo assisted me at long last.