MTN Service Sucks!!!

Ive been a contract client for around 10 years. A the end of last year I renewed my 3 contracts for myself, my wife and my mum who lives in CT. It was a std package with a few additional services from the retentions team. From the get-go they got it wrong. In the first month they didn't allocate my additional minutes so I ended up running out and having to load airtime. After numerous calls with probably more than 3 hrs spent waiting and speaking on the phone they eventually sorted it out, or at least I thought they had. The next month they messed up my mums account and didn't allocate her minutes leaving her in a difficult position. We had to load airtime for her so she could use her phone. Back in the queue for the call centre and getting passed from provisioning to contracts to SMC and then back to provisioning and more than 2 months and 3 different ref numbers later it is still not sorted. Once I finally lost my cool and requested to speak to a Supervisor, Rulani came on assured me that he understood and that he would take personal responsibility to sort it out and that I wouldn't have to call in again as he would call me, but unfortunately that never happened. What irks me most its the complete lack of coordination between the different areas and no-one willing to take ownership of the problem and the resolution. Call centre agents are trained to get you off the phone as soon as possible, which is nigh impossible as the 'system is very slow' and so called supervisors are trained to placate customers but clearly dont follow through with resolution. I am at the point of wanting to cancel all 3 contracts and moving over to another provider, which would be sad as I have been a loyal customer for many years so I gave them one more chance today...Im waiting for a call from a supervisor again but Im not holding my breath...