Soldato
Well, here we are again & another failed screen. First time using it tins winter and there was a 3" band down the passenger side not working so they replaced it last week with another "Shatterprufe" screen and now it looks like a barcode, it's worse than the one they just took out!
You could demand that an OEM one is fitted, I think the glass provider will try and pass the extra cost onto the insurer. I used to work for an insurance broker and we occasionally had a customer demanding OEM glass rather than the windscreen company's "like for like" replacement. The majority of the time the insurer did agree for OEM glass to be used.
The insurer is regulated by FOS so you could threaten to go down this route if they don't facilitate a resolution to your windscreen woes by agreeing to an OEM replacement.