I just wanted to say that I'm sorry this happened to you, but point out that accidents do happen.
Actually recently when I was registering Faith, who is too small to ever breed and was sold on limited registration, I wasn't paying attention and just entered in all the numbers it asked for on the paper I was holding. Well, turns out the breeder had forgotten to black out the numbers. I never would've registered her full but it was an honest mistake due to my lack of sleep that day. So crap does happen.