What do about damage to sprinkler system during cable install?

Several months ago Xfinity replaced the cable from our pole to our house. Today, I turned on our sprinkler system - and created a geyser. Upon inspection I found one of the feeder hoses punctured where the installers had buried the new cable. I accepted the damage as an accident and drove downtown, got supplies, cut out the damaged hose, and repaired it. But when I turned on the system again - another geyser. :( A bit more excavation revealed FIVE supply lines where the 1 had been damaged - and damage to a 2nd one. Fortunately I had bought extra repair supplies and replaced the 2nd damaged section. Turning on the system again, I still had a geyser. Now annoyed, I found a THIRD puncture, drove downtown AGAIN, got more supplies (and extras just to be sure). Bad weather made me wait until tomorrow to see if I can complete the repair. It's been very annoying to have spent 1 (or 2?) days of this holiday weekend fixing Xfinity's sloppy work (the system must be fixed before we leave for vacation in a couple of days). Can someone tell me how to let Xfinity know so they can at least somehow track down the crew which caused the damage and prevent them from doing more damage to other systems?