Many thanks I didn't know. From the post you quote, it is a very recent change (1 September so less than 2 months ago, and I certainly didn't try them again that recently since I was rebuffed several times before and there seemed to be little point!) but a very welcome one, especially as the French number should be 24 hours. I certainly will give them a try again next time - at least if I can find the French number which doesn't show on our foreign cards!

PS: since this has changed, would it not make more sense for FB to tell eligible customers and not just their agents?!