Broken bumper

On December 25, 2013 I received a flat tire on my way to Christmas dinner. I called Tip Top Towing, told the driver my address and asked him not to park my truck in the driveway because the angle was bad and to park it anywhere on my street. I came home to find my truck in the driveway and my bumper smashed. They deny the damage and told me I had to prove they caused it, which is basically impossible without video surveillance of my street. I found the pieces of bumper on my front step, so I know the driver knows he broke it. I suggest hiring a different towing company.