Who called from 8043539300

Asked if they could speak to (my name).  I said yes, who's calling?  They would not answer, but asked for my birthdate.  I asked who was calling, they refused to answer till I told them my birthdate.  I refused, they said they could send this via mail. I said ok.

Was left a message by a Rick Neuman (?) and identified as being from "Receivable Systems", asking for a call back. Probably collector.

Woman threatened me because I wouldn't give her my social security number or date of birth. She said she was going to report me to the police I refused to give the information.

Received a call from 804.353.9300 at 4:30 pm at my place of employment.  She asked for my date of birth and to verify my address.  I provided my work address and she stated that is not what she had.  So, I informed her I would not give my date of birth because I had no idea why she was calling.  She told me to listen to the prompts.  Mind you, she called my office.  The caller ID reflected "IO Inc - 7206 H"  as the name of the caller.

Guy calls ask am I speaking to ???? I respond yes you are. He goes I have a matter that's been on my desk awhile that needs to be resolved. Can you verify your address. I go no I won't. You should have it