sounds very harsh, i did an access course 7 years ago, and to put it bluntly i was awful, i failed a couple of essays, but they just made me re take them and it and it didn't affect my outcome at all. The thing is all i needed was some time to develop academically which is a struggle for mature students (for a number of reasons), it's nothing to do with ability, motivation or effort in a lot of cases, just simply that we need to get back into education. I've just finished my masters degree with quite a good mark (merit for taught and distinction for project), it's shocking that your college have done this, makes me angry actually. Whatever happens don't let it stop you from doing what you want to do.