Horrible will never recommend or ever use mtn again

So I ordered a phone online (contract phone) when it was delivered didn't set up immediately only decided yesterday cos I was giving my son my other phone ...wen I switched the phone on it showed me that I need to download telecoms client couldn't skip so I downloaded it then after it ask to make payment so I went Trew the whole this shows Im up to day obviously it's a new contract start setting up the phone the a warning pops up financing provisioning failed phone reset after all the set up so I put it on again same story I was send a faulty device I phoned customer care was told to go to mtn went to the store they never heard of something like this and they couldn't help me cos it's online so I was told to go to head office went straight there spent 3 hours with no joy still came home with a faulty device that I can't use which I use for work and I know *** I will be debited for this device all mtn has done is escalate my query...I was told the store can't give me a new device and head office can't cos it's online but from call centre to mtn store to head office no one can understand what is this so how do they expect me to stay with the device the next option will be to log it in and wait for online delivery while that's done I'm unable to work as I have no device this is an inconvenience to me and the money I spent to Uber up and down with no joy and it's unfortunate that they can't log in and just replace the device as this is not my fault but a fault on their end I'm helpless and don't know what to do cos no one can assist