I am a delivery driver. Was inside my truck minding my own business just arranging the front end of my truck the way it should have been loaded. The center manager out of the blue calls me out of the truck and points to a piss bottle found between my truck and another parked next to me at the preload belt. He asked me if it was mine. No one else was asked. No one witnessed this conversation. I answered no and he went on his way picking it up with a plastic bag and threw it away. At the PCM he mentions his piss bottle discovery which consisted the entire PCM and summed it up with if I catch who is doing it and prove it, they are not going to have a job here any longer. Should I file a grievance for harassment?