On April 15, 2015 a MSB Services truck was traveling in front of me on I-75 in Manatee county at approximately 5:05pm. I was a safe distant behind the truck which was pulling an open trailer with several items including rocks. Suddenly, several white colored rocks started flying out of the trailer and hitting my car causing damage to the hood. I pulled up next to the truck, retrieved the company information from the side and got off on the next exit to immediately call the corporate office. A man named Michael answered the call and proceeded to tell me that I had no proof it was one of his trucks and for me "to do whatever you have to do." Obviously this company is irresponsible, dangerous and unreliable. I will be filing complaints against MSB Services on a local and state level with all applicable regulatory agencies.