OK, the rest of the money came through this morning. Bizarre!
My invoice for my time/materials seems to have been blithely ignored. I don't know how much I can be bothered pushing it, this has been some slog!
Sod it, I'm calling this whole saga done. It's been a right old faff, ngl. The first time something's gone seriously wrong for me with a Thomann order. The experience has not been good. Having said that, you have to put these things into perspective. This will probably not dissuade me from using them again - statistically it's a blip, I've been using them for 17+ years and it's the first time something's gone proper wrong.