left no message

Receive calls every day. Have know idea who CCI is.

This company has called me at least 10 times in the past month, since I got this new UNLISTED phone number.  I am on the do not call list.  I called them TWICE and there is an option to be put on their do not call list.  I did that and I've continued to receive calls from them.

Caller ID said HBW and I picked up, said "Hello" and all I heard was a little "ping" sound and automated female voice that said "goodbye."

Weird.

I never answer the phone, but have gotten repeated calls from this number "CCI" over the last 2 weeks. I just got my home phone this month. Both my cel & home is on the Do Not Call registry.