Price quoted and price on contract differs

Against the advise of family and friends, I decided to upgrade my contract with Cell C. On Tuesday morning just after 8 am, I received a call from Cell C direct. I was offered the handset that I wanted at R289 per month. Within 10 minutes of agreeing to this, I received my contract. However on the contract it said R415 per month. I immediately queried this telephonically, but was told by the consultant that their telesales is outsourced and they do not have access to the recorded telephone conversation. She did however offer to cancel the deal. I stated that I did not want to cancel, but that I would like the matter resolved. She said she could not help with this. I then emailed customer service and received a call back from Rosemary who said that she would investigate the matter and get back to me. In the meantime the courier service came to deliver the handset. I explained that I did not want to take possession until the matter was resolved. We scheduled another delivery date for today, which was beyond the 48 hours that Rosemary said she needed to resolve the issue. No further communication received from Rosemary and will sending the handset back again. Terrible service