Update on this. Took it to my friend (who is a luthier) and he noticed a crack in the neck. Not a small crack, a monster one. It’s under the finish so it existed before the bass was painted (i.e. I didn’t cause it!)
Bax admitted this was a fault and agreed to a return. However, they refuse to pick it up.
So I’m stuck!
They suggested I took it to a pickup point but couldn’t tell me of one that would accept it. After a week of discussion, we’re nowhere further forward.
Thankfully, I enjoy these interactions to some extent and will be filing a Moneyclaim with the court on Monday if they fail to provide a solution. I’m charging storage (at £15 per day).
Will update in the fullness of time.