Severe safety issues with this contractor

Northstar is an *********** roofing contracting company that shows blatant disregard to safety. They replaced the roof on a property next to mine. On 4 separate occasions, there were incidents of roof tiles, debris and equipment falling into my property, putting the lives of my family and pets in danger. Every single time this occurred, Northstar was warned about the risk it posed and every time the safety aspects were ignored. They way they operate is highly ruthless without following the necessary code of conduct. I would recommend anyone looking for a roofing company to consider someone more experienced and reputable.