Caught our Rome, Italy Vrbo host sneaking out of our villa after entering without permission. What do I do?

Currently on our final night in Rome, Italy and pretty shaken up. Looking for advice on how to handle Vrbo support tomorrow.

We are staying in a 3-level villa. Today, our host wanted to swing by while we were out shopping to collect the tourist tax in cash. We explicitly told him to wait until tomorrow's check-out. He messaged back and agreed.

Well, came back from shopping and realized someone had been inside. The cash was gone, the lights were turned off, and a random laundry bag of blankets and towels was dropped on the lower floor. Worst of all, we found out the top floor door had been left unlocked. He went through all 3 private levels of our place.

The Creepy Part: As we were walking up the stairwell to our door, we crossed paths with a man sprinting down who looked exactly like our host. We are 99% sure he heard us coming, panicked, and snuck out of a lower-level door to avoid getting caught red-handed.

Is this a normal thing in Italy, or as massive of a violation as it feels? What is the best way to get Vrbo’s Trust & Safety team to take this seriously when I call them at check-out tomorrow?

EDIT: In this downstairs courtyard outdoor area, they left two large linen bags for when they clean the room for next people.