Changing Account details with MTN is a nightmare

We have been trying to transfer 3 cell phone numbers out of one company into other companies. Each individual went through the painful and exceptionally cumbersome process of going into a branch (Rondebosch and Century City) to effect the transfer. We all though the process had been finalised, only to discover that all 3 phones were then transferred to one of the Companies where one of the phones should have been transferred to. This has resulted in unnecessary administration and invoicing. I contacted the call centre and notified them of my dissatisfaction on 31 August 2015 and told we would have to go to the branches again (which is a waste of time and precious resources). I told them I was dissatisfied with the response and was told the matter would be escalated, to date (8 Sep 2015) no response. I further send an email to MTN'S customer care on 1 Sep 2015 venting my frustration. I received a response that the matter had been referred to their Business Department on 4 Sep 15, again I haven't received a response. Their service is shocking and the fact that we have been loyal customers for 15 years means nothing to them. They cannot call themselves a service provider.