Do not pay

I took my vehicle in to a Nissan garage for a service and also to have a look at the problems I have with the clutch. I have a service plan for the service and I have the AMP (Advanced Motor Plan) for the problems with the clutch. The mechanics had a look at the clutch and found that it was in deed faulty and took the needed photos to be sent to the AMP for a claim. AMP phoned me afterwards just to say that the clutch is at the end of life of the clutch and they are not willing to pay. When I took out the AMP contract it was a extended warranty plan, which means that it is supposed to cover the end of life of the clutch only to hear from the person that it is now all of a sudden a breakdown plan. Please can you assist ormustI rather get my layers involved. The plan coated me 8000 Rand and I have never used the plan until now, plus I have had the plan for a year.