Two subscriptions

[MH26]

So I recently got my facebook back, which last 3 months long. with that, i lost my spotify account. I got back my spotify, but my subscription had ended. so I got the student premium sub, I was trying to open spotify on my phone and use the same info I had on my computer, but for some reason, the only way I could get spotify was to get another subscription, even though I already had the student discount. I need a refund for sure. How do I go about this?