[exasperated]

I had the same thing earlier this year and Johnsons Gloucester also fixed it - impressed. They successfully took out the old one and rebonded it for free. Not sure what would have happened if they'd broken the screen while removing and whether they'd have then asked for a contribution but all was good. I had exactly the same problems as a few of the threads on here documented. Passenger side leak in footwell and I could ever so slightly see movement if I pushed the top corner of the windscreen. Car was 6.5 years old when it started leaking.
When I got it back it squeaked for a day or so and I was really worried that the bonding had failed, or the car had been driven too soon before the bonding had set, but it stopped and the car hasn't leaked since.