I don't mind the scamming so much as the dishonesty about it and the rudeness. And I suspect that if they'd been upfront and polite about it you'd be less bothered.
I don't give a stuff about what they do to get a new battery in, unless it involves 3rd world exploitation, but I do object to rudeness, being inconvenienced, and being told a face full of porkies.
'What about that question?' followed by 'Oh, put that the customer objected to repair in our workshop.'
I'm guessing if you turned up on day one and they asked if you wanted it repairing there and then (or within a day or two) in their workshop you would've said yes and you would've gone home happy(ish)?
Yes - particularly as the estimated return from Tissot is 6 June.
And then I think, do I really want to risk somebody's job just because they were a bit ham-fisted in dealing with me and are probably following a repair policy straight from head office anyway.