No assistance from MTN

As mentioned in my previous report, I had to switch from MTN to another service provider due to its literally no coverage in the area I reside. I explained to MTN countless times how this has been negatively affected my work performance as well as life in general (Numerous phone conferences have been cancelled and I have been absent from various business engagements due to MTN's poor coverage. Plus, cannot call or receive call from anyone, no internet banking because OTP cannot be received, etc.). I returned the device and all the accessories last Saturday at Blue Route Mall, and I was told that I would receive a call from MTN on Monday (23/3)specifying the exact cancellation date, which is required for me to arrange everything with Cell C. As I cannot receive a call, I left my husband's number so that he could receive the date from MTN and immediately call Cell C. It's Friday, and no assistance has yet to come from MTN. My husband had to physically drove there though could not get any info. On the other hand, Cell C has called him twice by now for follow-up. What a difference in service! I NEED THE EXACT CANCELLATION DATE FROM MTN. PUT YOURSELF IN CUSTOMER'S SHOES. PROVIDE SERVICE