1. Your language proficiency letter was not persuasive, that's why you are asked to take IETLS.
2. Language is the only item you don't know how many marks you can get by only submitting an explaination letter. Once you take the test, you will know exactly how many total marks you get. In other words, you should know how many scores you need from IETLS to reach the passing marks now.
3.If you don't have at least 67 marks, your case will be rejected and you won't have chance to take an interview. Interview doesn't evaluate and mark your language capability.
2. Language is the only item you don't know how many marks you can get by only submitting an explaination letter. Once you take the test, you will know exactly how many total marks you get. In other words, you should know how many scores you need from IETLS to reach the passing marks now.
3.If you don't have at least 67 marks, your case will be rejected and you won't have chance to take an interview. Interview doesn't evaluate and mark your language capability.