Mac Book Pro screen cracked inside, no damage outside

Hello,

I got up this morning with mac book opened and turned off. I saw that my screen was pretty dirty and decided I have to clean the finger prints on it. I used one Clorox and one paper towel to clean it. Once I finished I turned it one and saw my screen cracked. When I rubbed my finger on the screen there is no indication on the front or the back of the display that it was hit there. It's only on the inside of the display. I took it to apple and they said that it was an accident when I only washed the screen, like I have done with multiple Mac Book Pros I have bought in the past. I have Applecare but that doesn't cover it apparently. No where else on my mac does it show that I have damages and I did a diagnostics and there is nothing else wrong with my system. They said I'm looking at $800 and that is just outrageous because of a flow for the super thin screen on the inside. I don't know where to go from here but I have used Apple products my whole life and being a college student, I don't have that kind of money to fix it. This problem should of never happened. I do all my graphic design and coding on my Mac and have always loved it. I also have a Tech21 black case surrounding it for extra protection so something like this didn't happen. Please if there is any help I can get here, it would be very much appreciated.

Benjamin Schmidt