Call went to answering machine, waited a moment then hung up.

I get calls almost daily from this number and they never say anything. I can wait minutes and there is nothing but silence. When I yell at them out of frustration, they hang up.

Received call from this number, recorded message about home medical alert system.  "Press 1 to speak with an EMT technician to learn more."  I'm on do not call list as well.

Got a call from this number. Advertising a home alert device for senior citizens. I am on the Do Not Call federal list.  I am not a senior citizen. I explained this to the caller, told him I would report him to the police for calling a federal Do Not Call phone number and he hung up on me. I do not want any more calls from this number.  What can I do to prevent them from calling again? I cannot do any more call blocking from my phone as it is already full.