I was delivering a trailer full of IBC totes of roofing membrane material to a contractor at a Walmart who was renovating the Walmart's roof. I parked my rig in the back and went to go find the project manager. When I got back, I had one of these barnacles on my driver's side windshield and a massive chain and lock strung through my drive wheels. The barnacle attaches like a giant suction cup and I couldn't even get the edge of a knife under it.
Walmart hired an outside towing company to manage their lot, with an emphasis on "no semi parking", and the manager of Walmart said that I needed to take it up with them to get unbooted. The tow company demanded $600. So I told the project manager to handle it otherwise I wasn't unlocking the trailer.
It took the roofing company, the tow company and Walmart SIX HOURS to come to an agreement amongst themselves and I got paid delay pay for waiting.