well done for the win.
In my opinion and through experience some insurers are getting trying it on with all claims, including windscreens. Last year my wife was driving past a (ill be PC) static caravan park (ish) and a concrete block was thrown at the car, its broke the windscreen, its a double glazed screen (which saved her life) and they tried to install a standard screen, i sent the fitter back and they tried it again 3 times.
On top of that recently i was told by a broker that i had to use my work address for the insurance (as its higher risk than at home), so £ 500 more. I called the actual insurance company and they had no idea what the broker was on about, so from all sides some of them seem to be on the make.
And to cap it all i had a renewal quote last week for the Fezz and they wanted an enormous amount, much more than normal, one phone call got 35% off, so whats going on there!!!!! Rip off springs to mind
Rant over - feel better now!