Hero Motocorp — Gear problem in my new hero passion pro

Address:

aarson motors raipur

I have baught a new passion pro about 6 month earlier, at that time within week i have face some gear problem in it after that i had taken my bike to sevice center, they told me that after some time of driving the problem will no more, but till 1st service the problem is there, then again i have share this problem to mechanic, he take my bike for service with all problems and said he will resolve the issue but he didnt do any thing, my bike ran almost 1700km till now and also mechanic nothing do in 2nd service also .