Re. Irv's comments - 2 FTOs lost me and my squids through exactly the same reaction to my surfacing there - and I wasn't marching out in disgust either, but slinking out in shame, putting it all down to the idea of me learning to fly being evidently ludicrous. Just as well I persevered, really.
As to how much custom they lost - well, I don't have the moral fibre to add the invoices I've carefully filed quite yet! I think if I knew the truth and had nothing to show for it I might curl into a little ball and suck my thumb for a few days... But PPL should be this spring if all goes to plan, so I'll give you a grand total then.
Though, that said, since I'm not a broken woman and still have a roof over my head, and haven't even sacrificed all my beer money, it's not the biggest deal. What else would I have done with that money that was better?