2 women calling themselves investigators and won't identify for which company they work. They're a collection agency threatening legal action and impersonating legal authority as attorney's. Forwarded the info to my attorney.
Most likely a scam. Legitimate debt collectors ID themselves and have valid phone numbers. If they have a valid debt they are supposed to send you a debt validation letter by US mail. e-mail no good. Of course they won't do this. Other than that , ignore their calls. Don't talk to them or give them any information. Block their calls.