Royal Enfield - Got New bullet and there was damaged chain

Hi All
I got my new royal enfield and there was a sound coming from chain, After that I visited sukhmani auto mobiles for complain they told that we will give chain spray and it will be covered, I told them to do but the problem gets solved for * to * days only after that again visited there they do the same they repeated this for almost I visited there, After three moths they are telling me that you have to change the hole chain and chain spocet, I told them that it was from the starting and it is manufacture problem, So they replied that we cant do any thing chain is not under the warranty,