Hey @biancainez!
Help's arrived! Since Spotify's verification partner, SheerID, wasn't able to verify your student status, you shouldn't be charged for this!
Does the charge happen to show as pending or pre-auth on your banks' website or app? If so, the charge will most likely be returned within 48 business hours - the transaction may disappear, or be crossed out.
Let me know if it doesn't; I'll see what else I can suggest! 🙂
Cheers!