12 months on going repair

My motorcycle has been in for repair for the past 12 months, under your subsidiary company World of Yamaha. Commercial manager Gareth Dryer has been nothing short of unprofessional, dishonest and uncourteous! How does a bike with 750kms firstly break down so many times in its first year. And then, still be in for repair 12 months later! Please tell me, who can afford to pay for something that sits in a repair shop for a year. If this was my primary transportation, how would i be getting to work! It is ridiculous that customers can be treated like this with absolutely no recourse and no help from any board at all!