Just my luck coming up from Watford on the M1 a stone caught the lower drivers side corner of the screen on the black section and within minutes it was cracking down then up the drivers side

So just rang the insurance firm (Swiftcover) and they are coming out tomorrow, not sure who they use, as it was one of those dedicated lines. Is there anything I should be watching out for when having the screen changed on the 8 ? I now it can sometimes bugger the rains sensor up etc. on some cars?
I always hate having the car messed about with tbh, things never seem to go smoothly for me. Last time I had a screen the t*t fitting it managed to slightly depress the parking indicator which was on the dash of my E55. Whilst I managed to wiggle it back into place it was never quite the same and trying to prove they did it if you don't notice it straight away isn't easy!
Any pointers grqatefully received
Glyn