Windows 7 Got charged twice for the same software

[mark05]

So yea as a studenti ordered windows 7 for 40$, and received 1 key, not 2, but i got charged twice 40$ on my credit card...

Would any1 be kind enough and give me the link for where i will fin help about this?

(sorry for my english, this isn't my native language)

 

[adduncan]

contact the store where you ordered it from, or your credit card company

tell them what happened and they will sort it