Unauthorized Adobe charges despite paying the annual cancellation

I have been an Adobe customer for over 6 months. Since the beginning, I have contacted Customer Support more than 4–5 times, and each time I was told I had no other active subscription. About 4 months ago, I was given the option to pay an annual cancellation fee (approx. $105) or continue paying $29/month. I paid the annual fee, yet Adobe has continued charging my checking account $29/month without my authorization.

I have now been charged 5 additional payments ($145 total), which must be refunded immediately. This is an unauthorized and improper charge, and I am extremely frustrated after repeatedly contacting Adobe with no resolution. Please refund the $145 and confirm that all unauthorized recurring charges have been stopped.