Hero Motocorp — battery changed of bike during service

Address:

Q-1/60 budh vihar phase 1, opp Fair deal maruti showroom, Delhi

I bought hero spender+ bike on 11th aug 2019. On 7th nov 2019 i gave my bike for service at jmd automotives budh vihar new delhi.in evening when i go to receive bike i notice that my bike battery got replace and wiring also dislocated. So i told to them so from last 3 month their no response for my complain and service centre also not accepting this. What a shame that in service centre also we cant trust. Shameful experience.
Please help me because no one is listen.
Name-mohan
Mob. No.- [protected]
Vehicle no - dl11b0632