Whisper sent to wrong battle.net account

A series of ingame wow whispers to a specific character (ie not a friend whisper) sent from a guildie to me on one battle.net account (Ashayo#14xx - this one) arrived in the battle.net social tab and in-game wow window of a completely separate battle.net account (Ashayo#12xx)

The ingame whispers received on the 2nd account did not identify the sender. It just said (in the blue battle.net whisper colour) “whispers: let me kno wif you want those pets”

Screen shots available from both accounts if you can provide a means.