While this is a bit troublesome, there is not much to worry about. All you need to do is contact the test center that you picked and inform them of the cancellation or postponing of the exam. While this is rather easy, here are a few things you should consider: - Your examination fee will not be returned if you cancel within 5 weeks of the test - unless you can provide a medical reason with evidence - You will need to cancel or postpone the exam due to medical reasons, you will need to provide a report within 5 days of the exam. If you manage to do this, you will receive your exam fee back minus the administrative costs. - If you need to postponed or cancel the IELTS exam due to circumstances that are beyond your control, then your exam will be shifted to the next closest date