18.4.18 Damage to our driveway

One thing we are really not happy about with Allworth is that one of their sub-contractors has driven over our newly-installed driveway pipe and has cracked and broken the concrete head wall! We have contacted Allworth with photos to try and get the repair cost (about $1200) taken off our final construction progress payment, but expecting them to come back with a far fetched reason why they won't take responsibility for the damage. Our main issue is that the driveway pipe wasn't even the allocated site access point...it's a 4 acre block with 100m frontage, so they can easily access it without having to drive over the pipe.