Complaint regarding my inquiry about a vehicle that was for sale

VW Rustenburg advertised on Cars.co.za a 2019 VW T-Cross for R270 600. I was interested and enquired. The Salesperson of VW Rustenburg sent me an email with a cost estimate where they increased the vehicle's price to R290 000. The salesman Mr Mogomotsi contacted me and ensured the vehicle was still available. We communicated all the time on WhatsApp. I asked him to send me the vehicle's VIN number since I wanted to check the vehicle's history. He was aware that I would buy the vehicle in cash. Later in the afternoon of April 13, 2023 he sent me a quote which I questioned as they quoted me the increased price. Their F&I also contacted me regarding the vehicle to ask if I was interested in smash & grab and a tracking system. In the meantime, I have been waiting for VW to respond to my email regarding the price increase. Up to date, I have not yet received any feedback from them. On the morning of April 14, I contacted the salesman again. I received no response from him and called the Dealer Principal Mr Willem van Tonder. There was no answer and I typed a WA message to him. He responded to my message with the answer that he was aware of the price slippage and that they received many applications at the lower price as advertised. He mentioned that they sold the vehicle to a client whose financing was approved but without notifying me that the vehicle is no longer available. Mr van Tonder told me that he was sorry but the salesman was new and was not aware of the first transaction. The management system of VW Rustenburg is questioned. If an offer to purchase a vehicle is made by a client, then all salespersons should be made aware of it. Other clients should also be made aware that a transaction is in progress and if it is cancelled, they will have first, second or third priority. I am disappointed in VW Rustenburg’s management system and they caused me a lot of disappointment. Once again, I am very disappointed in the way they handled the transaction.