I did not get a good impression of their security people when we needed to work with them for a common client in Florida. They installed the access control system and we needed to connect a network I/O device to it to initiate a lockdown of all the doors that came from a 3rd party system. Too long and complex a story to get into, but the short of it was all we needed for them to do was connect the wires from the I/O device we had mounted on the wall to one of their panels in an IDF and program a rule in the system to lock or unlock doors based on the input. They didn't even need a ladder as the panel and I/O were both wall mounted person height.
1. They said because we were requesting it, they were going to charge a higher rate to the client rather than the client's "discounted" contract rate. Which made no sense as we were doing this on the request of the client and simply doing the technical coordination so the client didn't have to be the go-between.
2. Their "discounted rate" was the same as many of the standard rates around the area.
3. Two guys showed up and all one of them did was stand around and watch. They were there maybe two hours but tried to charge almost a full day for both people. I had to argue with them to be fair to the client and get the hours reduced, but not by much.
It just gave me the impression they were used to milking large contracts with impunity where overcharges like that were rarely noticed.