Well, Matt, there you have it - FT does it again.
You can try to find a recepit where a spend would have earned miles if you'd used your FFN (hotel car rental, etc.) and call, you can reinstate with money (why does THAT not surprise me!) or learn to say "GOodbye" in many languages.
Adios. Kwaheri. Sayonara. Adio. Ciao. Auf wiedersehen. Totsiens. Ma as-salaama. Tata. Farvel. Moce mada. Au revoir. Khairete. Aloha. Ratukama. Do svidanja. Sala sentlê. Güle güle. Lukim yu bihain (
tok pisin, my favorite!).