Hero Motocorp — hero glamour engine noise

Address:

Janram automobiles kottarakkara, Kollam, Kerala

Dear sir,
My hero glamour 2017 dec carburator model have some engine issues. I bought the vehicle from vega motors puthoor kottarakkara taluk kollam district kerala state. Some noise occured from the cylinder head (Valve noise). These issue starts from 13000 km. At the time km is 18400. I reported this complaint at janram automobiles kottarakkara taluk kollam district kerala state. All free service done with oil change. On reporting time the service consultant says these noise occured while running as normal. But i didn't believe that this is a normal noise. These noise increases abnormally. But i reported again and again to janram autobiles. They have no responsibility to solve this issue. So please do needful.