2019 Subaru Legacy wipers, windshield & visibility problems

My car is 2 weeks old. I used the defroster on saturday night and on sunday morning there was a crack on my windshield from the bottom center. Up and to the passenger's side. I do not hear a stone hit my windshield while driving. Subaru said it was a stone and is charging me over $700.00 to replace it. I have been driving for many years and have never gotten a crack like this. I believe it is a faulty windshield that cracked with the change in temperature.

I own a 2019 subaru legacy. I am very shocked that I have experienced three major windshield cracks within only 18 months of purchasing the vehicle. The first one was only 5 months after I bought the car (02/07/20), the 2nd time was 7 months later (9/17/20), and the 3rd time was on may 1st, 2021. The cracks came out of nowhere; once while driving on a light traffic street, once while on the highway, and once while the car was parked. Replacing the windshield for the subaru is very expensive!