I deliver to this place up on top of a hill and I leave the packages at the gate because the code in the diad doesn't work. Near the gate Is a faucet on a PVC pipe. I back the truck between this pipe and the gate and there is about two trucks space to maneuver and I always have the PVC pipe on my left driver side and pull parallel to it when I back. Several weeks had passed since I last went up there and last week I finally had a package. On this occasion I noticed that the PVC pipe was lying on the ground in dry dirt. I did my normal back and then delivered and left the location. The next week I had another delivery and I the PVC pipe was still in the same condition. The next day the customer called in and said that I had backed into the pipe and caused the damage. A part time sup called the customer and explained the situation and that I did not do the damage. That customer did not accept this and insisted that it was me. I called the customer and told them my details and told them the only thing I know for certain is that I didn't cause the damage. The customer still would no accept this and will speak to my supervisor on Monday. Any advice on how I can protect myself or anything else I should be doing? It sucks having this type of thing weighing on me. I have backed without incident for 21 years but have never been falsely accused of something like this.