I get calls from this number nearly every day on my cell. Sometimes multiple calls per day. No message. I have the number assigned to a "telemarketer" contact on my phone with a silent ringtone and no vibration.
Caller ID just comes up as phone number 956-465-2247. Pretty sure these people have system notes stating "If woman answers phone, do not speak, just hang up" :)
Numerous calls, numerous times of day, even after telling them we're not interested in them and quite happy with our current services. Every time answered, I can hear breathing, no speaking, then just a hang up. I think they continue to call in hope that someone else answers. Good Luck with that!