I'm having the same problem!! I got charged $5.99 twice!! when I haven't submitted my documents yet. Everytime you go to the spotify student section they make you enter your credit card details every single time, when it's already on for my current spotify premium. What is the point of such a useless thing? And charging people even though they havent submitted any documents for proof of being a uni student? This is outrageous to say the least. Come on Spotify what is this?