Bad customer service

On 10 December 2015. I enquired about a vehicle on Imperial Select. the salesman Emile Manan of Kia Motors Northcliff called me back and we got the paper work going. An Offer To purchase was sent to me at 17:18 same day. I immediately sent it to my bank for processing. The next day around 8:20, I received a follow up call from Emile requesting for my ID and drivers licence, which I sent to him immediately. While doing that I was in communication with my bank to speed up the process. I got another e-mail from Emile telling me to put pressure on the bank for approval as they only had that car left but promised to keep it until I get the approval. the bank approved and I informed Emile that the bank has approved and they were drawing up the contract. I gave Emile the e-mail addresses of my banker so that they can communicate directly. This was happening the whole day. At 17:30, I received the call from Emile saying that they have sold the vehicle in question to a walk in customer because he had a deposit on hand. I would like this resolved as the bank has drawn up the contract and the insurance has been done and cancelling will be inconvenience.