I didn't recognise the number, but answered the call and I said absolutely nothing -- I remained quiet. I was met with silence for about 10-15 seconds then the call disconnected. I suspect that this call was using an answer-detection feature.
Get these unknown calls frequently and do not answer. No message left after answering machine went thru entire message.I have a feeling it's the, you may be eligible for a knee or back brace if you have medicare scam..