Bring the phone back!??

On the 5th of September 2020 I have taken out 2 Vodacom contracts at Makro Montague Gardens. These contracts included a voucher along with the device. I explained my whole reason for wanting the 2 contracts. A few days later I was called to confirm there was an error which they will try to resolve - I asked to be kept updated throughout the process as I still had one of the devices at that time. After not hearing anything for more than a week I concluded this must surely by now have been resolved. A week or so thereafter I was INSTRUCTED to return the device and which ever amount I need to pay back on that day and all of this needs to happen before the 27th September 2020. I tried calling and was diverted to their call centre and requested call backs - this never happened. I was appalled by the manner this case was resolved and requested to speak to a senior. I was called by the supervisor in charge who was also not informed of what has transpired up and until that point and I was assured I will be called on Tuesday 29th September 2020 just to keep me informed. Once again, I did not receive a call yesterday. I emailed my complaint - nothing. The assistant store manager is also aware of this matter and assured me this is not how Makro conducts their business. I am hoping this is resolved as I will also escalate this matter to the Consumer Goods and Services Ombudsman. These contracts had to start and end concurrently and now I may end up have various dates for them to finish - all because of some system error that had absolutely nothing to do with the client. UNACCEPTABLE...