Accidentally Licensed

So, in scrolling through templates I accidentally clicked on one and bam I suddenly have licensed it. It's a little ridiculous that there is NO confirmation for purchase or anything of the like. This is my school account and I want the llicense taken off. I havent saved the image or anything, and I expect my school to not be charged for this.

Is there a number I need to call to have this taken off my account?

The item number is: