Do you get a refund if you drop a cl within the time permited ?

Yes but it depends when you drop the cl. If you drop the cl later in the semester, they might give you something like a 25% refund, if you drop it in the middle, a 50% refund, and if you drop it early enough, you won't get all of your money, but you might get like 75%. If you dropped it a week into the cl, give it some time, ask your academic advisor or the bursar. maybe they don't give you your money back untill the end of the semester?