Caller: Unknown -but claims from "Health & Fitness Well Being Forum"

I had this number call me twice in 2 hours ...The 2nd call was identical to the first... same voice, same person...Very persistent, almost rude and demanding, wanting my personal information... DO NOT give this information out...( I am very suspicious) ...When dialing back the very same number, a recording comes in....."This phone number you are calling is not connected..." ?????????

Few calls from this number call back says disconnected

1 Missed call I rang back immediately and it said disconnected, strange.

2 missed calls from this number. When I rang the number back it said it was disconnected