Honda 2 Wheelers India — Lock problem

Address:

H.no 2 idgah path sarumotoria dispur

Locks are same for all the Dio scooters. My scooty Dio bs IV was about to steal due to your manufacturing negligence. My scooty was parked in the road near one another Dio. The other person with his keys unlocked my scooty and took it away. After some time that person came back and returned us the scooty saying he took it by mistake as he was a good man. Then I checked by unlocking his scooty with my keys and it got unlocked. How can the company be so irresponsible with this? I want my lock to be changed without paying a penny