Royal Enfield — silencer getting overheat due to engine problem

Address:

hydrabad banjara hills road no. 13, Hyderabad, Andhra Pradesh, 500034

Aug2018 i buyed a bike from begin onwards i am getting issue of silencer i have raised complaint in service center but no reaction from them warranty also available but not providing doing repair and giving back. Silencer became black, not replacing bike alrdy i told to them that i will a complaint but no reaction
As a company policy any issues with in year replace the bike
But from the begining i am getting silencer problem.4 services i went with same issues but not clered still going on same problem. How i can get justice
I am telling to them prblm of bike but not replacing and repair and giving. Product is problem. Atlest replace silencer i asked but also not listening. More than two times if silencer have to replace new silencer but they repair only doing so getting problem regularly.

Pls help me with this issue i humble request