Got a call from this number.  Asked for my ex-husband.  I asked what the nature of the call is.  He asked me where he could be reached at.
I said, may I ask who Is calling, so I know what to tell him?  He said, that's confidential.  I said.. so is his number?  Your agency is top secret- all I want to know is what business you work for? Im not asking for anything personal to his call.  He said, "Have a day." .... have a day?.. lol assuming is debt collection. Just a shot in the dark