Pyrotecnico

This is not a review of the services provided. This is a review of the drivers they employ. My family was traveling down the interstate in NY, in heavy traffic on a weekend headed towards a popular vacation spot. Half my family was in one vehicle, the other half was in my vehicle. The interstate was busy. There was a pyrotecnico box van that cut me off once, and I thought he was just a bad driver. However, then he nearly slammed into the back end of my fiancé and two daughters ahead of him. As traffic continued to move, the right lane of traffic was moving faster than the left, where the box van was, and I was moving ahead of him again. He swerved into my lane, nearly taking my front end off, forcing me onto the shoulder of the road to avoid an accident. At this point I called 911. I then followed him, staying behind him and even slowing down when he slowed well below the speed limit. When he pulled over on the side of the road, I pulled over to wait for the police. He got out of his vehicle and came at me yelling «didn’t I know he was carrying explosives?»
I called the company and left a message immediately. No one called back on Monday. I called on Tuesday and spoke with the receptionist, who had a manager call me back. He said he could only offer an apology. I suggested he fire him since he was not the type of person he wanted representing his company. He said he would talk to him.
If they allow this kind of driver to be on the road, what kind of safety do they offer when setting up an explosive show for your venue?