HIGHLY ANNOYED CLIENT

Bought my vehicle from Gys Pitzer Motoring in January. Already when vehicle was bought the service intervals were not correct. With that being said, I lodged an issue regarding my gearbox in June yet they were not very helpful and kept pushing me around from pillar to post. I then took my vehicle to be serviced (keep in mind , service intervals were wrong from the beginning) and now my claim has been declined. I feel like it was too soon for my car to be giving so many issues. Also, why should this be paid from my pocket as the dealership should of been able to pick up gearbox issue before selling the vehicle. I feel that this shouldn't be my problem and dealership should take full responsibility for their error.