PATHETIC SERVICE RUSHING FOR A SALE

I have bought my Car in August 2021 Hyundai i20 to be exact, what a nightmare, i bought the car as a second owner at a mileage of +-76000 and the sales manager Desmond told me that I should take the car for service at any Hyundai at 90 000KM. but no one informed me that the car does not have a service plan, "apparently the service plan ended at 45000KM" what makes me angry is that i get to be informed about this when the car is due for a service and i had to pay R5000 because yes "people have immediate R5000" on their pocket walking around with it. i am very disappointed, as a first time driver i would have taken the service plan and pay monthly if this was communicated at the initial stage but hey guess what, now when i call them they tell me about a sales consultant actually its a blaming game which affect my pocket. VERY PATHETIC, I WAS TOLD TO CALL THE BANK THAT FINANCED MY CAR FOR WHAT I DO NOT KNOW