Well I contacted Jagex about it, and in typical Jagex form, they were completely useless. All they said is that I should be able to complete the task whatever my level, and that they cannot refund me or add any days to my credit. If I was able to complete the task, I would have done so by now because I have been trying for 3 days! Hopefully my second support query will help, Otherwise, seeing as it is f2p aswell, Im stuffed.