I am writing to inform you that I wish to withdraw from the (name of course) degree at (name of University) with immediate effect.
This is due to the fact that neither the environment nor the surroundings have satisfactorily met my expectations.
I would be very grateful if you would provide me with a release letter, which I will need for my new education provider.
Please acknowledge my withdrawal as soon as possible, and take the relevant action.
Note - you may wish to elaborate a little on what it was about the environment/surroundings that did not meet your expectations.
Student or Learner