Cancel Subscription

I started a 7-day free trial of Acrobat Pro on Jan 5.  I almost immediately cancelled the trial - just wasn't working for me and I couldn't invest the time to make it work. Anyway, Adobe billed me for $29.37, and apparently intends to bill me the same amount each month for the next year. I work for a small charity with limited resources. We want to ensure that my plan is indeed cancelled and that I am reimbursed the $29.37 that I have been billed to date. We certainly do not want to be liable for a cancellation fee and we definitely cannot afford $29.37/month forever for a service that does not meet our needs.

I need help to resolve this and the various online "help" screens are not, in fact, helpful.  So, I am appealing to this community for advice and resolution. (Why is this so hard, Adobe?)