I was under the impression the the service departm...

I was under the impression the the service department was great, I even recommended it to my friends, NO MORE! at my last maintenance I don't know what they put instead of a normal windshield washer fluid as it frozen solid! It is 18F and I cant really drive my car without stopping and wiping the windshield myself, try doing it on a highway! Such a small thing but such a huge disappointment!