I truly don't intend to be rude here, and I'm preparing myself to be shot down, but is this a troll thread?
The details you've posted about your interview are fairly intricate and believable, and I can completely understand your desire for feedback. I also understand that just asking whether it would be unreasonable to contact the college doesn't mean you actually intend to.
However, if you studied law at university, and were invited to an interview at Oxford, you would need to have very good reading and writing skills, and in general have excelled at subjects like English in school.
Your posts on this thread and others indicate that your writing style isn't great: little punctuation, poor paragraphs and sentence structure, and on one thread you commented on, you were unsure of the definition of the word "testimony". Your initial post was quite hard to read.
Of course, this is only Mumsnet so it really doesn't matter what you type, and I'm more than aware that my own literacy skills are FAR from perfect, but I wouldn't expect somebody who studied law to write like this.
I know you've mentioned you're a minority, but looking at some of your other posts, I'm beginning to doubt you are who you say you are, MoonStar.
Of course, I'm probably wrong and if I am will rightfully be attacked on here for suggesting you're a troll. I mean no disrespect if you are real.