Honda 2 Wheelers India — Over heating of back light and melting of fiber glass.

I am one of customer. Purchased activa 6g from BAPNA MOTORS AMBERNATH EAST.there is a issues of over heating of back light due to that fiber glass was melt and chance of big accident fuel tank in right up of than and caught of fire. i went to shop bapna motor they put there hands up and told me to go service center which is in kalyan.
i went to service center aher honda service center kalyan they cheak the problem they solve the issues but what about damaged part.
I need to change that part which is damaged but Honda company saying
this is not happen first time this type of issues came to us.
what to do now I need reply if technical issues come to scooty that also just a month of purchase. who will solve this issues.