Yamaha Szr — Service is very poor

Address:

North Delhi, Delhi

I have avail total 5 Yamaha Bike services (3 bike ervices from Yamaha Service centre @ "Moti nagar" and 2 Serivces from Mother Dairy yamaha service centre East Delhi) but his service is very poor. there is not benefit to done service from Yamaha authorized Service centre. I told to the Main person of the service centre but there is no suitable respose from his side.....