No service plan

To whom it may concern

I would like to find out how does Hyundai sell a pre-owned car that is less then 30000km without a service plan but add-ons? I am under the impression that a car is sold with a service plan, whether standard or not and it should be my decision if I want to include it or not. It was not sold to me therefore thought it is a standard with the car. If I opted out of the service plan the Business Manager would ask to make sure that I choose not to include it in case it was an oversight from the sales rep and myself. On the 16th September I went to take my car for service and that’s when I found out that my car does not have a service plan. If I had not taken the car for service, I would have not known that I don’t have a service plan for my car but unnecessary add-ons which I can do without. I would like a resolution for this matter as I am not willing to pay cash for this service and would like for the service plan to be included going forward as part of my instalment. If not, possible I would like to return the car.