They Sold me defective bike

Location/place: Kanpur,U.P.

Name of company/service: HONDA/Shree ASR Honda

I bought a bike HONDA CB Shine 8 months ago.I am facing the problem in my bike since the day i buy it.More than the tow dozens of time i visited to service center & i registered complaint about the problems,but they fail to find the actual problem & they replaced some parts of bike on their dubiety. they also charge for this,after that the problem is not solved.