This morning, my wife and I were awakened by the phone ringing at 6:00 AM. Does anyone else get phone calls that when answered the line just goes dead ? I've been getting these types of calls for years, only on my land line. Yes, I still have a land line. My wife insists we keep it because in 2017 that's how we were contacted to evacuate due to the fires. Anyway, the phone will ring, I see an area code I don't recognize, I answer it to see who it is, and then the line goes dead, beep, beep, beep, dial tone. WTH ? Is there a purpose to these calls ? I'm not talking about car warranty calls or infected computer calls, just ring me, then hang up calls. I usually just block these numbers after. I can't be the only one !! Any thoughts ?