The big problem is the inability of phone companies to actually trace calls since the advent of spoofed phone calls generated over the internet. Check out this web page and consider how it's being abused.
https://www.spooftel.com/freecall/
The scammer can make it appear he is calling from the house next door to yours. The police see his caller ID info as being right next to you. So they take the complaint about the "man with a gun" seriously.
This is a serious problem. Sales calls completely disappeared until this starting taking place. The sellers / scammers don't even have to bother with using a spoofed call number because they know the LEO is not able to enforce the law and they have essentially given up.
Not only can the scammers call saying you have a gun, they can say you have fired the gun into their home repeatedly. They might even fake the sound of gunfire. If that happens forget not letting the LEO's into your house. They are going to knock down your door and stick an AR in your ear and a boot on your neck.
We need to demand that something be done about this type of calling. There has to be a method of making sure a call comes from an actual phone that can be traced instead of the man on the moon. If you notice, the "card services" calls always have a different phone number listed on your called ID. They were among the first and the worst to use spoofing. There's really no end to the foul deeds that can be done using this technology. The phone companies are going to have to spring for new equipment that monitors whether calls come from the internet or not. I know hackers are hard to stay ahead of but it has to be done. The consequences are too bad not to. Imagine someone calling the cops telling them you have their 5 year old daughter inside your house and you have a gun. They WILL knock down your door. And people sometimes die from such treatment by the LEO's.
I've had scammers set their phones to call my house a dozen times a day at all hours because I played them on that Microsoft calling scam. I let them go on for about 20 minutes while I acted like a moron with access to a credit card. They didn't like it. And I've heard tales of online scammers going as far as sending people to houses to get even with anyone messing with their scam. The Nigerian scammers are particularly nasty. Their government totally encourages them to scam people. They fear nothing and they have resources. Those scams work or they wouldn't keep doing it and that means they have money for all sorts of things including physical confrontations with people who turn the tables on them. Scammers are scum so they should be feared. They can and do hurt people at times.
We need to lean on the government to crack down on this stuff again. It was great when I didn't get 15 fake calls a day. I've blocked a lot of the calls now but I still get a bunch of calls a day. And the stakes get higher all the time.