Who is an unusual character at your work?

we have a cleaner who ive never met in person but they have taken so much of a dislike to me (or my desk) they will diligently dust everyone elses desk/monitors and do what you would expect. comes to my desk, the most half arsed dusting possible, like the cloth barely touches my monitors at all. but then proceeds to dramatically emphasise cleaning my desk, but not actually cleaning, but pushing everything, monitors are crooked and not aligned, mouse now hanging off the desk and keyboard moved. So far as I can tell, its only my desk this happens to. I dont mind, im not angry about it, its just bizarre, theres no one else in the office at the time, I only know whats going on because the CCTV camera has them recorded. for the longest time I was confused as to why my desk was an absolute state and everyone elses was perfectly fine.