Safeguard Business Systems

Safegaurd place 2 stickers on my door with no date stamp. They said my property was deemed vacant. Both times. No time date stamp. They said it was deemed vacant.
Freshly mowed lawn. Two cars in driveway..
Never came to the door except to put a sticker on it. Twice. No reason . No explanation. I live alone. They will not find me at home during work hours. Never left an explanation. or time.or date.
They are a scammer.
I might take severe action if I find them in my property.