Cartoon ******* car salesperson trope in real lif

In August 2015 I bought a Hyundai i10 as a second vehicle and part of what made the deal attractive is that it came with its original service plan plus the warranty - not as an additional extra. I tried to have the car serviced at Hyundai recently and I was informed that the car is NOT under a service plan and I'd have to pay for the major service in cash. I phoned the manager, Mr Kaber who is also the salesperson behind this farce and he's told me that he offered me a service plan as an extra, which I rejected, a statement that has two problems: 1: this is my second car and I know that I would NEVER agree to buying a car without a service plan. 2: it would not have been necessary to offer it, I have no memory of that. Luckily, the operations manager of the company I work for was helping me to procure the vehicle as a personal favour and she distinctly remembers that the salesperson stated that the car still has its original service plan and warranty because she was also conferring with another auto & pedigree salesperson on my behalf and that it's what they discussed. He even told me that I could bring the car to A&P for servicing, and when I called he curly told me they couldn't.