Can I resubmit an application if I withdraw it?

I made a mistake on my original tier 4 online application so I was going to withdraw it and resubmit. Can I do this? I'm pretty sure I can get my money back. But I want to make sure this is allowed. Otherwise, I don't know what else I would do.

The mistake was that I put my nickname instead of my middle name on the application and that doesn't match my passport.

Why do you think that you'll get a refund if you withdrew your application? Varying the application may be better than withdrawing.