Who called from 2402296134

SCAM

I just got a call not too long ago. I didn't pick up and they didn't leave a message. Another random caller who wants nothing but to harrass us.

Recorded message that says "The FBI reports a home breakin every XX seconds.  If you allows us to place a sign in your yard, we will install...."  I hung up as they are selling an alarm system?  This call was placed to my cell phone.

It is the ADT. Don't know how they got my number and how to stop them. Any suggestions?

Called at 7:16 pm yesterday. Didn't answer.