Same here. It is for an elderly life line. I've talked to them several times and told them not to call back but they keep doing so. Filed a complaint with the FCC THREE times. Still calling. This has been going on since October.
I answered and there was silence for a few seconds then click. I think it may be criminals calling to see if you are home. There have been a number of robberies in my area.
The number called at 8:30 pm and no one answered when I said hello. I called the number back immediately and got a voice message saying that I had reached a number that had been disconnected or was no longer in service!
Repeated recorded calls received from 504-539-4503. When attempting to return a call a recording states the number isn't in service. I've reported this to donotcall.gov but they continue. I block the caller and they change their number and call again.