BAD SERVICE

My name is Mangakana Ramogale, I'm currently driving a ford fiesta 2017, 1.0 Eco boost ambient 5door car. I have a service with plan with Ford Protect which is under Pinn Africa. I have been paying the service plan of R297.50 for almost three years now and I've been taking my car to service according to the service mileage. I took my car to the Silverton dealer for the 140 000km service, i got a call from the service consultant telling me that my contract says i should have brought the car in at 139499km for the 140000km service. she cant bypass the system i should pay R2 500 for service, which I have been paying for all this time. I asked the lady which contract is that, I checked the Pinn Africa contract nothing was written in that about 139 499km. Then I called the ford protect office, they said I should contact Ford Head office, which I did. Ford head office the consultant told me to call the dealer were I bought the car, I bought my car at the Germiston Dealership, they said there is nothing that they can do. Then I contacted Hatfield dealership which my car was previous serviced at for 120 000km in July 2020, they told me the same story that they is nothing they can do. They can not bypass the system. Someone here did not do their job, I mean I should have been told of the 139 499km or April to bring in my car for service. If this 139499km was done on the system by a person, I would have taken my car in on time. I don't have the money to service my car as I have trusted my service plan to assist me in this regard.