Rotten Disgusting Service with MTN South Africa

Im so annoyed with MTN, i have cancelled my contract with them last week on the 03.06.2020 since then i haven't been able to receive any calls. Contacted them them 135 that took forever to be answered Sunday 07.06.2020 i was give a pin #330*000# spoke to Nonhlanhla it didn't work still couldn't receive calls , contacted them again while busy struggling finally another lady answered and she gave me another pin #35*0000# which didn't work and the she mentioned that she logged a call at the end of our conversation she will will send reference number which i never received until today, got so annoyed contacted them again this morning 08.06.2020 the lady told me that she logged the call with another department it will be sorted during the day but my phone couldn't receive calls, i contacted them again at 12:00 spoke to another lady who gave me reference SMC*** and she mentioned that the problem will be sorted in 72 hours, I will never wait for 72hrs for something that is not even my fault tomorrow it will be a full 1 week not receiving calls, it is your **** up own it and fix it. This shows that you are forcing people to continue with your contract even after the bull**** service you provide them. I have cancelled my contract long time ago with Vodacom i never had this problem, the reason why i went back to them is because MTN doesn't take care of their customers. I will never ever recommend anyone to contract with MTN because they treat people like garbage. Sort out this i want my phone working ASAP.