A company operating above board would be sure to carefully document the state of the rental before and after whatever work they were doing. Any tradesperson/installer/technician/repair person will have tales of how they were accused of stealing grandmas wedding ring from the bottom of the sock drawer while repairing a leak in the kitchen.

So either Bot Company damaged property and is trying to pretend they didn't. Or they are incompetent and failed to document the state of the property or handle the owners complaints appropriately.

Given that their training robots and would therefore be collecting as much data as possible, including camera data, I'm leaning towards malice instead of ignorance.