I never got my school refund

When I dropped my class this semester, I was due a refund. I looked at my online account and the refund was due to be mailed to me in February. I figured it would be applied to my account for the summer. When I saw that it wasn't, I contacted the school and they told me they had mailed the check back in January.

Now I have to mail a letter to get the check stopped and reissued. I hope the money comes back by mid-April because that's supposed to be my first payment for the summer session.