not happy customer

This was our third time we bought car from Webuycars, this time at Dome. But the first time when I had to take a loan. I am very happy with my new car, I bought Haval H6 2024 model. Which means that there is a service plan and warranty. Two weeks after my purchase I've received a bank statement with extra R 40000 loaded over a selling price. When I contacted a person from finance department, she told me that there is extra plan and warranty were included. I never asked about that, Then she said that no problem, Webuycars will cancel it and money will be paid back to the bank, Two weeks later - that's not happening. I sent numerous messages, mostly of them simply were ignored. Thats so unprofessional. I am very surprised, not in good way, that such a big company as Webuycars, doing these things. Hope to hear from them soon.