Disgraceful service from MWEB

I cancelled a fibre contract with Mweb at the end of Feb, but I am still being charged for the cancelled service. I have called MWeb at least 10 times, but NO ONE answers, I was on hold one time for over 30 minutes, and when I finally got through to an agent, he cut me off after a few minutes, he obviously was not able to help, so he just cut me off!! My acc number is ***. Can someone from Mweb PLEASE call me urgently to solve this problem. Thanks Roy Gardner