Here is the section from Adobe's Subscription Terms regarding cancellations... In most cases, customers can cancel themselves online – however, if you are in one of the countries mentioned, then you would need to contact Adobe cust. service:
You can cancel your subscription anytime via your Adobe Account page or by contacting Customer Support*. If you cancel within 14 days of your initial order, you’ll be fully refunded. Should you cancel after 14 days, your payment is non-refundable, and your service will continue until the end of that month’s billing period.
* Specific countries require cancellations to be made only by contacting Customer Support. See the list of countries here.