Impossible to cancel contracts with ********* MTN

MTN South Africa is shockingly ********* and inefficient . I cancelled a contract in July last year and agreed to the two month cancellation fee being deducted immediately . However MTN continued billing me until Feb 2022. The original contract then expired so they didn’t bill me for one month but have now commenced billing again and in March deducted for TWO months for a bigger data amount than the original contract . Two other contracts which are quite new and should still be running were not billed. One of them is not getting data and the other is. I am thousands of rands out of pocket and wonder how much MTN’s revenue is overstated by the seemingly deliberate practice of refusing to stop billing on canceled contracts . I have escalated multiple times and so has the branch I deal with