Drivers here will forget to bring the paperwork when they deliver. Or bring the wrong paperwork. "No problem, I'll fix it when I get back to the depot. You don't need to sign."
We had a lost shipment where the freight company swore up and down that we received and signed for our crate. The signature didn't match up to anyone who works here, and it was signed at a date/time when our office was closed. The freight company signed the POD themselves to dodge responsibility.
The best one was when we paid extra to buy an on-time delivery guarantee for an overseas shipment. The shipment was late and we tried to collect. Turns out the guarantee only guarantees the cost of buying the guarantee. So either the shipment is on time and they keep your fee, or it's late and they return the fee. No matter what happens they never have to pay out for a late shipment.
Don't get me started on the damage they'll do to our stuff if given half a chance. Or to our building when backing up the truck.
My opinion, these guys are all crooks.