Robodialer.

Called cell phone, a number we rarely use or give out. Left no voicemail. We NEVER answer ANY unsolicited call. No CID on cell phone. Looks like this probable CRIMINAL is just getting started. A legitimate caller will leave a message with their name, company name and valid call back number.

Another number to add to my cell phone scam list?  I didn't pick up and they did not leave a message.

Two different numbers in a row... left no message.