I'm in the same boat- left the uni on 22nd, but they said I never came and withdrew on 1st Aug. They said I dont have to pay for 25% of the fees- generally, if you leave within the first full weeks you dont pay tuition but check with your uni and SFE.
My issue is I'm not sure if I have to pay my maintenance back in full, as I needed to live on it when I was in halls at uni. I have the bulk of it but have spent about £500 as I had to pay for early withdrawal in my accom, food, and general living expenses like the bus and subway when I was there. But as uni said I never was there, I'm worried they'll ask for it back in full immediately!