New contract

I needed to move from Altech to Vodacom and the phone I wanted was out of stock online & the Tyger Valley branch had it. I phoned to make sure I can come in after work and they would keep it for me and that the deal would be exactly what was online. The contract was signed with a soft lock limit but to my shock, this wasn't loaded. When queried in store, the first consultant was confused and said it was the wrong contract, etc which was not great to hear. Another consultant then said it's just the limit and showed him how to load it. Isn't everyone trained? Now my contract didn't have the limit I signed on the contract and I've been over invoiced but despite them promising to contact their H/O to resolve it, no one has contacted me. I was also not told about a prepayment amount that would go off within 48hrs of signing the contract but when queried, was told that it should have been explained - that's it?? I am very disappointed in the service especially since I was promised the exact same deal as the online only to be told later on that the Game Pad is exclusive to the online deal. None of what was promised has happened and it's only been 2 months! What's next??