lots of phone calls from this number and when I answer, there is nobody there!

I get about 3 calls a day from this number, all hours. It does not have a caller id, nor does it say anonymous or unknown. Once it had V81812360700015 for the id. I have answered this call a number of times as it is a local number for me. No one answers and after a minute it hangs up and the phone starts beeping fast. I am also getting calls from a 972-370-3053 with the same issue. I suspect they are related. I suspect this is a scam for a security system or medical alerts as I have gotten a lot of calls around those lately.

Has been calling nearly every day for the last 6 days.  Never leaves a message. Try to call it back and it says it is not in service so this is clearly some scammer who spoofs the caller ID.

Getting added to my call blocking list now.

Phone rang only twice and they hung up. Caller ID says out of area, but it's a local call.

getting calls from this number but no one is there