IS MTN ON A SECRET STRIKE/ SYMBATICAL/ GIVEN UP

Background, a couple of months ago I took an MTN contract account over from a family member. I immediately confirmed that all the documentation was in place, ID number were updated (I did this because before this I had been with MTN for a good 14 years, so I know how inefficient they can be, but never have I realised how bad). I logged on on the portals and sites to confirm, two weeks later still the wrong ID and address. I had to request this to be changed about three times again but finally it all looked okay, nothing too out of the ordinary for MTN. Later on I upgraded swiftly to a new device as I was due for one.<br> Fast forward about 4 months. I recieved a call from the previous owner of the contract, she notices that every month they have still been debiting her cheque account to an amount of R800, whilst debiting me the stated amount on my bill. How in the world does this make sense. I have contacted them multiple times, they always respond quite quickly to get my details and disappear. It has been 24 days (29.09.2015) since I sent the initial email to customer care. is this acceptable in any way????? why cant anyone tell me what the problem is, are you on a secret strike???