Billed Cash for a Vehicle Service Still OnWarranty

I bought my Jeep in May 2013 from constantia kloof Jeep and it came with a warranty which they then said was valid until i reach 100,000km and would expire pn 15 november, however if i havent exhausted 100,000km at 15Nov2015 i can extend the period with a maximum further period of 3years or until i reach 100,000km, and that they cannot extend the warranty beyond 100,000km.The car is at 84000 km but Jeep refuses to servcie it under the warranty cover and insist i must pay for the service.Bryanston says their record shows the warranty expired 28/09/2015 and that it is unfortunate i was given wrong info of 15/11/2015 &amp