I've never have gotten a call back although I've l...

I've never have gotten a call back although I've left several messages. Not super helpful. When I did reach someone, I wanted to pay off my full student loan. Went a month thinking all was well until I decided to check my account just for grins. I then found that I still have a balance.... I don't understand why I called someone to help me make sure that my whole total was paid off just to find that it wasn't a month later. Also annoying that they don't have an email and the only times they are available to call is whe I am in class or working.