Hires aggressive CDL drivers who don't know traffi...

Hires aggressive CDL drivers who don't know traffic laws. I had one driver from this company who decided to pull out in front of me, with his emergency lights on, from a parked position on the side of the road. He also decided to throw me the middle finger and drive away over the speed limit (with his emergency lights still on). I contacted the company, but the supervisor on duty won't pick up his phone and never replied to my recorded message.