I really enjoyed the Honours College and did well, but my regular degree programme isn't going well and I've heard I have to leave - why?
You should have already spoken about this with your Faculty Honours coordinator and with your study advisor. The decision to dismiss you will - if all is well - have been taken carefully, taking all special, personal circumstances into consideration.
If you do not agree with the decision, you may appeal it. The Teaching and Examination Regulations on Nestor will tell you how to do so.