Hard luck old chap. I have been there before and so have most, if not everyone on this site. Try not to take it personally, they are not saying you are not good enough for them, just this time you did not make the grade.
With the feedback you can expect them to tell you which tests you passed and which you failed. You will probably find that you only failed one of them. They will also tell you how well you did on the ones you passed if you ask them. I put my feedback request in writing and they phoned me a few days later.
Chin up.