Vision Security Entered home saying to check alarm panel Orem Utah

I have recently signed a contract for three additional years of Vivint Security Systems. 

Approximately a week later a  Vision Security salesperson came to my home offering a better deal to use them. He said I had 30 days to cancel my contract. I didn't agree to cancel so he left with no sale.  A few days later my husband answered the door, the man told my husband he was there to check alarm panel, I was in another room, my husband then told me to come talk to alarm company? I was in total shock first of all he let this stranger in to our home, second he was not with our alarm company, he was with Vision Alarm. The man just said oh I see you didn't get a new panel? I said we were with Vivint (sign in front yard) he said oh so they just gave you a new sign? I said I did the deal for $10.00 less a month & I didn't want a panel that my Smart phone could activate. That was the end of that!

i feel he entered our home under false pretenses! I have been nervous leaving the house knowing this person invaded our privacy.

This company needs to be reprimanded for their sales tactics.