Reporting bad drivers – Is this a good idea?

Would you report a bad driver to their company? This happened on my way in today.The first thing this jerk did was lay on the horn at the driver in front me who was first at the light the very split second the light turned green. That driver seemed confused, as was I, why this moron behind me in his window company truck was so nasty. Then with that first car in front of me on a one lane, no passing road, the truck starts tailgating me furiously when I had nowhere I could possibly go. Next the road breaks ever so briefly into a second lane to go into a park but then goes immediately back to one lane. The car in front decides to swing over to that right lane for a moment not realizing how brief a lane it is, and I didn't try to zoom by him because I knew he'd have to cut right back in, which he did. Now the truck is going crazy, driving 6 inches off my bumper, blaring his horn and screaming out his window. The other driver and I were both going a bit above the speed limit by the way. I get tired of this jackass so I pull over as far as I can and roll down the window and motion to the truck to let him pass. For letting him go by I received more horn blowing and a middle finger. Then he gets up on the bumper of the lead car and starts menacing him, and more horn blowing.

The truck clearly had the number of the business across the back (a Pennsylvania company with a Pennsylvania driver I imagined) and I had his plate number. I thought of how reckless this tool was being and used my hands-free to dial that number. I got as far as the voice menu options when I decided not to do it. I decided, right or wrong, that I wouldn't try to get him fired. I don't know if I did the right thing in hanging up.