Royal Enfield — aggression on service

Address:

246763

Recently i have given my royal enfield classic 350 for service. It was having a gps tracker device inserted in it. But when i took the delivery of bike it wasn't there. I have went to the showroom many a times but they keep on changing their excuses. I feel really disappointed the service costed of rs. 5365 while the tracker was of rs. 6500. I want to complain in police but firstly trying to get help from here. I want my tracker back at any cost. They guys are simply playing with our trust, not only them but most of the companies.
The bike is registered in the name of my father, and its an incident of "royal enfield showroom, near guru nanak intercollege, najibabad, bijnor". I truly want to get my tracker back without involving the police. Please do something if you can help it.