accidentally have 2 active accounts

In Nov I used a 2 mo. promo for adobe creative cloud pro.  When it ended I separately went and signed up for a student plan.  I have been paying monthly for that plan since January and was charged for my CC Pro plan on Feb 28th.  Today (March 2)  I log in via web browser to download browse the fonts and I got prompted to update my payment information. After doing so,  I now appear to have 2 active CC pro memberships.  When I go to cancel the full price membership it says it will charge me $271 to cancel what is a redundant membership that I didn't mean to sign up for.  I can't seem to find any way to get help for this.  Anyone else have experience solving this?

tl;dr:

Promo CC Pro got activated and paid for via “update payment” prompt after a separate student account had been started and paid for.  Need to cancel redundant account without fee.