Hero Motocorp — hero duet quantity 2

Address:

Village diffarpatt, Post office- Bindraban, teh -palampur, distt kangra

I have a hero do it which is making irritating sound. Service engineers claims that this sound is coming from the silencer while i think this sound is coming from the engine. We have been servicing this vehicle at the same service center till the time it's purchased but still people cannot resolve this as they said that the sound is coming from the silencer. I am very sure that there is some problem with the engine which they are neglecting again and again. We are facing this problem since the time it is purchased i have one more hero duet purchased for my brother which is facing the same issue so i'm planning that i have to return these two do it's two hero and they can give me the new one else they can resolve the problem otherwise i will go to the consumer court then and there please resolve this in a month otherwise i will take the legal action against company.