suspicious behaviour

Tonight when i'm trying to sleep my dogs start going crazy, I go to investigate the situation and find its a chubb security car parked at my gate, I call my security company which is not chubb to go remove them from the gate as my dogs are being disturbed by them not that your security guy could care less. When adt arrived to remove them from the gate there were 3 other non chubb people in the car, the chubb security guard then came to the car from the house next door that he was supposedly responding to which, i will add i never heard the alarm go off at, then when questioned why he's there by another neighbour he jumps into his car with the other 3 occupants and races off. Why would you have 3 occupants in your car and leave your car completely unattended to??? This whole event was very suspicious and i want it investigated or i will take this further as we have already seen what chubb security employees get up to on carte blanche.