Thats exactly what i just got too! i have no clue what is going on or what that even means!

no msg or anything

Rec'd the same inbound call this morning, I said hello and after 4 seconds, they hung up.  When I called the number back, I got:  "The network location code you have dialed is no longer valid, please hang up and dial 1-0 plus the T-Member 7 digit phone number without the area code." x2

called my house twice today  no answer