Hero Motocorp — Complaint about locking system

Address:	Bhiwani, Haryana, 127306
Website:	www.heromotocorp.com

Respected sir madam
I have purchased a bike on 9/11/2015 from your respected company it is Splendor Pro .chassis no. MBLHA10CAFHK07821.
bick no HR12AA 2458
I am having the problem with its locking system. whenever I lock the lock of the bike it gets locked but the problem is whenever I try to open the lock it doesn't get opened.
I have to tried so many time even I feel disgusting whenever I try to open the lock of my own bike it seems that I am stealing others bike.
I went to the service center of the company and got my bike serviced 5 times.
last two times I have told to repairing mechanics about the problem. they asked me to rest assured but my problem is still unsolved.
I want you to focus on this matter.
kindly take action on my problem and get my problem solved about my locking system.
I will be thankful to you.