Paying premiums for inferior repairs - Claim C932739

I filled out a claim form to have my windshield repaired as there was a small chip from a stone beneath my rearview mirror. PG glass as the service provider comes out to replace the windshield which is first of all unnecessary as the window doesn't not have a large enough chip. The second issue was the replacement windshield was not OEM from BMW but rather a shatterprufe windscreen which is also not tinted or includes an anti smash and grab like I stated in my claim form. Why do I pay premiums which are quite high firstly if the replacement parts are not from the manufacturer thus potentially voiding my BMW warranty and motorplan? This i find totally unacceptable so now I will be taking the car to PG glass myself tomorrow morning to repair the windshield as I can not trust Miway enough to provide the correct information for the repair work.