Withdraw

I am writing this letter to request withdrawal from the course MATH441, which was taken during summer 2007. 
After the midterm, I intended to drop the course, however was not able to drop on time. Part of the reason I did not drop the course on time is I am experiencing stress due to immigration issues. I was given a study permit extension until November 30, 2007. 
Also, I am taking this course for the second time; I have paid international fees, which was not easy decision to make . 
Furthermore, I am having difficulty with my current living arrangement; my roommates have not been respectful of my preferences in regards to noise problems.