It's far too easy to say it was unfairly marked. It is extremely rare for an exam to be marked unfairly. If it came out lower in the remark then you have clearly just failed the exam. Why not take a step back and look at why you failed, instead of claiming unfair marking. We all fail stuff, it's the only way to learn, we learn from mistakes. But the only way to learn is to look at where you went wrong, and accept the blame instead of blaming the adudicator.