Most likely a scam. The threat to send officers to your niece's home for "interfering in an investigation" sounds like typical debt scammers who attempt to scare people into paying a bogus debt, a debt that's already been paid, or even a debt that is owed - but not to the caller. The threat they made, by the way, is illegal. Have your niece contact her local police department and make a report for harassment. I'm sure the police will tell you it's a scam attempt. Your niece can also block their number - her phone may have this capability, or she may need to look at buying a call blocker.
I meant to add - it's likely that the number is being spoofed, so this David Hoffman probably has nothing whatsoever to do with the callers. Scammers often spoof numbers - make it look like they're calling from someone else.
I want report this number, it came up as David Hoffman. This number called and they harassed my niece and her family. I do not live with them, I live in the Mainland and want to know if this is a business number. I want to know if this is a scam. They told my niece they would send officers to her home for interfering in an investigation. My niece told them I do not live there. So, I do not know what this is about and would like some answers.
Most likely a scam. The threat to send officers to your niece's home for "interfering in an investigation" sounds like typical debt scammers who attempt to scare people into paying a bogus debt, a debt that's already been paid, or even a debt that is owed - but not to the caller. The threat they made, by the way, is illegal. Have your niece contact her local police department and make a report for harassment. I'm sure the police will tell you it's a scam attempt. Your niece can also block their number - her phone may have this capability, or she may need to look at buying a call blocker.
I meant to add - it's likely that the number is being spoofed, so this David Hoffman probably has nothing whatsoever to do with the callers. Scammers often spoof numbers - make it look like they're calling from someone else.