
For what it’s worth I’d say your bet has been settled correctly. I assume the “official scoring” you refer to is the judges scoring (Faye and Ashley both got the maximum score) but, in the final, the judges scores are for guidance only and the result is decided entirely by the public vote. Clearly, Stacey won that and the BBC have decided not to call the minor placing based on who polled best. So, the “weighed in” result is, indeed, a 3 way tie for 2nd and 3rd.
Unlucky perhaps, as it’s fairly certain that Ashley is least popular with the public. In past years, someone has been eliminated part way through the final. But, based on how this year’s renewal played out, I feel your bet has been settled correctly, however unlucky you may have been.