I'm trying to move out of one of their properties,...

I'm trying to move out of one of their properties, and there's been absolutely zero communication, or confirmation that they have received my 30 day notice. It's been impossible to reach anyone by phone or email.

Update2: I managed to get in contact with management, only for them to completely not show up for the scheduled pre-moveout inspection. I swear, if they take a penny out of my deposit, I will take them to small claims court.