My itunes

I am a current student and was being over charged on my iTunes bill the last couple of months. I seemed support to fix the issue and they canceled my subscription. I have been trying to renew my subscription for the last 3 days. I confirm my student email with unidas and then go to my playlist there is nothing there and it ask me to chooses a subscription again. This is becoming very aggravating. Please help me fix this issues I can again enjoy my music.