I went to the factory on June 6 for an upgrade on ...

I went to the factory on June 6 for an upgrade on 2 of my Gen 2 guns. The guy who met me to write up my requests was arrogant & rude. Every question I ask was answered with sarcasm. Went along with the BS because I wanted my pistols upgraded. An hour later I received a phone call informing me the 19 had a cracked frame and that they could give me a Gen 3 frame under warranty. When I asked if I could keep the original frame they said no. Now I have a bastard gun w/2 serial numbers and gone is my collectible 19. To make matters worse, both guns had new springs installed which are so strong I can barely rack the slides. Also both guns feel like they're full of grit; the slides now feel like they are loaded with sand. Both were smooth as silk when I brought them in. While the work was no charge, it will cost me to have them fixed because I will NOT take them back to Glock. Very disappointed. And disgusted.