What to do when you get a Low IELTS Score

If you do not get the IELTS score you wanted or you just
probing about what you can do if you don’t get the IELTS score you need
 You can consider the following options

1. The first option you should consider is whether to try to convince the organisation which demanded this score, possibly the university you want to attend, to still accept you with the current band score. There is a chance if your IELTS result was only slightly less than the requirement, say 0.5.
2. If you have a justified complaint, you can request for a retest. Keeping in mind the test centre will only allow you a retest if it is reasonable. If you have a reasonable complaint you should already have informed the centre by completing a "Test Day Complaint Form" on the day of the test
3. If the marks across the entire test vary by more than 2 bands your IELTS test may already have been re-marked, there is a much less likely scenario that you will increase your score by requesting a further re-mark. If you choose to request a re-mark make sure you do so within six weeks of the date of your IELTS test. Remember re-mark will cost you around two-third of the test fee
4. There is a strong possibility that you score may changeif re-marked. That is if you had any problems during the test e.g. not completing a writing task or being psychologically inundated by nerves during the speaking test. If you are confident that your English level for a module is higher than the score you received and you did the exam to the best of your ability and you believe you can raise your score for that module enough, you should think about asking for that module to be remarked. However, you should not ask for a re-mark for a module that already has a high enough score, there is a risk you may end up getting a lower mark. As the re-marking is done in London, it can sometimes take 8 - 10 weeks.
5. The last choice is to retake the IELTS test. You may have had some problems with timing and could not complete part of the test on the previous test day, and you believe that next time it will be much easier. Focus on your weak areas next time. Make an effort to improve your English if you feel it is needed. You can also look into Improving  your time management during the test

I sincerely hope you wouldn't have to employ any of the options above as you get your required IELTS Result first time. However, do not hesitate to ask for a re-mark if you are confident that it is justified. Nevertheless it is your time, efforts and money you invested in it.