When I get calls from unknown callers I simply pick the phone up and say nothing.  I've had birds squawking and dogs barking but I still just remain silent.  It confuses them and they hang up never to call me again.   It's a pity that the do not call list is ignored or they get around it with the teeny tiny print from your creditors which basically tricks you into allowing them to give your number to their authorized people/businesses.   If you don't allow, you don't get whatever it is you want so this is a form of entrapment and another way for the credit cards folks to make a buck at your expense.

Just received a call from this number. I answered but no one on the other end. I can only assume they are from the health insurance company others have been complaining about in the posts above. Seams like a waste to call someone and not try to sell them something.  Our number is listed as a business and therefore not on the do not call list.

Same thing again.  They call but no one there. Pretty stupid to pay for a call and then do nothing with it.

Unsolicited and unwanted call. The caller did not leave a voicemail.

This is for life insurance.