Did not answer, no message left, calls multiple times a day. If you don't answer, they will call back in about 3 minutes. Another site listed them as a scam.

I am receiving the same phone calls from this number and they do call right back when I do not answer the phone and also do not leave a message.

calls multiple times per day,  they said they're selling insurance,  but the caller ID says ADT activation...  also they left a creepy message,  a man "groaned" my name and my husband's nickname...  Really creepy.