Yet another terrible MTN customer experience.

Yet another terrible experience with MTN. I cancelled my mobile router in February 2024. Despite the cancellation they continued to bill me for March, April and May. Now when i try and get a refund for the 3 months, I'm transferred around the call center for 47 min. At the end they only wish to refund for the month of May, apparently that's when the cancellation finally was processed. This isn't the first horror show I've experienced with this company. Certainly my next cell phone won't be purchased here.