tappet noise from Hero Xpulse 200T, 2021 Model, Jagdalpur, Chhattisgarh

I purchased brand new Hero Xpulse 200T, 2021 model from Vizaypal Hero, located in Jagdalpur of Chhattisgarh. After completing 10000kms, a noise emerged from head of engine. After riding more than 50kms, there is a noise (tik tik sound) coming from head when I shift gears even in higher speeds (60-70km/hr) and after idling the accelerator in higher speeds there is another noise produced by engine. I had shown the bike to the showroom and left the bike for whole day but still the sound persists. The expert mechanic at hero showroom, Adawal, Jagdalpur kept the bike for 1 whole day and returned the bike with simply washing it and said there is not noise. The same problem lies with many Xpulse 2v models. Please do something as this goes with your image.