Flagship store has zero customer service

I had to port to MTN due to connectivity issues with Vodacom. I went to Sandton City 2 weeks ago and explained that I had to port on a certain day, that is why I was coming in to get everything sorted out before the time. I received an SMS a few days later to say that my application had been conditionally accepted and that someone would call me. No-one did, so I called that weekend. The lady said that the contract had been approved and that someone would call me. The day before my port date I went into the store to see that all was in order only to be told that there was no phone and I must just "choose another one". I ask why no-one ever called me to say that they could not get the phone which is incidentally being advertised in all of their media. They did not try and access it from another store, or let me know about this. I was told if I wanted to wait two or three weeks than they MAY be able to get it but no promises. Naturally the manager was not there so I called that evening. No manager again but spoke to the assistant manager who I had to really explain why everything was not ok, as she thought it was and thought I was being difficult. I went into the store the next day and - no manager again and spoke to the same lady who was quite condescending. By this time I had discovered that in order to change to pay as you go on vodacom I needed to rica my sim and had asked for my documents back from them in order to save time and facilitate the process. Don't ask me to go back to this store. Their customer service is non-existant and I will not support them. I would like people to know what happens in this store.