We're all just other Apple users here, no one here cares whether you buy another Apple product or not so your threats are falling on deaf ears.
If you like, you can complain to Apple here:
Feedback - iPhone - Apple
You didn't apply a screen protector, you scratched your phone, that's pretty much the end of it.
Feel free to choose another vendor next time, but the glass on their phones will scratch as well in the name of enhanced shatter resistance.
In fact, as mentioned above, if you buy a Samsung, you get stuck paying for a screen protector as they include one from the factory.