These are actually collection calls geared at trying to find information for unpaid medical & hospital bills that is a part of United Healthcare's subrogation/"recovery" department. Beware - it's illegal what they are doing.
As they are supposedly not trying to recover money from you, they think they are circumventing the law which prohibits them from calling an Employer on a debt collection call. They get information from ancestry.com and others hoping to track down a family member stupid enough to give information on the living as well as the dead.
They recently tried to call & ask information on my Company phone asking for my deceased birth mother - what a real class act. I was given up for adoption as a baby and only recently was my information placed on ancestry.com.
There's a special room in hell for the likes of folks like these. I am a member of AARP and I will begin with them, the Better Business Bureau and then finally see if the PA State Attorney's office will do anything. In the meantime....
The Hang Up Calls are from the automatic dialers trying to determine the best time to have one of their vultures call you - they share the information across Business Units - that's why sometimes they're trying to sell you Insurance instead of bleed you for payment.
The biggest problem that makes this a chargeable offense is that they will claim as a family member you are responsible for the debts of the deceased party - That's the scam - that's what Probate Court is for not UHC.