Upgrade Fail

In the last week of October we went in to Cell C store at Loch Logan Waterfront, Bloemfontein as I was due for an upgrade. I chose to upgrade to the iPhone 7 plus on the Pinnacle 600 which came with 5Gig extra data. The assistant informed us that they did not have the phone in stock but will arrange to order the phone and inform us when it arrives. She also said that she will do the contract and paperwork immediately and send it via email for signing. We never received any feedback or paperwork from the store and went in the following weekend to find out what was happening. They informed us that they forgot to do the contract and to order the phone so we had to choose a new upgrade package. The deal we preferred was no longer running and we asked to speak to the manager since this was not what was promised to me. There was no manager present and we also tried phoning Cell C exclusive but we could not get through. They assistant asked us to come back in the week when the manager was there or I could phone Cell C exclusive and revert back to them. I phoned cell c exclusive the next Monday and after several transfers they told me that the Cell C store will be able to create the same contract we wanted from October month. I phoned the Cell C store immediately and the assistant said he will speak to the manager and call me back. The following day he phoned me telling me that they could infact help us with the same deal we wanted. When I went into the store they again said sorry they cannot help us with the same deal. This was now the third time we went in to the Cell C store. There was again no manager in the store and I had to leave disappointed and frustrated with the bad service and they were wasting my time. I was promised that the manager will phone me to resolve this but until today I have not been contacted by the store manager. I am an Cell C exclusive customer and spent thousands of Rands each month on my Cell C contracts. I am very disappointed and need Cell C to resolve my problem as soon as possible.