Royal Enfield — problem not solved from last 4 servicing:engine tapping (tik tik) sound

Address:

530022

Hello team,

This is girish chenna from visakhapatnam, andhra pradesh. As i bought the royal enfield classic 350cc with an engine number: u3s5c0ha236624.in january 2017.

Royal enfield brand stores
Address: 50-50-30/12/1,
Meghana towers, near gurudwara bus stop,
Seethammadhara,
Visakhapatnam,
Andhra pradesh
530013

Till now i have completed 4 servicing and i was facing the tapping sound since 2nd servicing. From 2nd to 4th servicing i have given my bike 6 times on this tapping sound complaint. But they didn't fixed it till now. Servicing address is

Royal enfield company service station
Address: 20, hb colony rd,
Krm colony,
H b colony,
Visakhapatnam,
Andhra pradesh.
530022

Everytime i was calling them after the service day that my bike complaint wasn't fixed. They simply asking my bike registration number and we will call you again. As the same i don't get any response from them.
So everyday that tapping sound makes me odd feeling to ride my bike. Please take any action on it, so that i have to give my bike for the 5th service.