Issues with surprise Stock subscription

Today I went into my account, and to my surprise I had an Adobe Stock subscription I never signed up for. I immediately canceled it, which of course, given Adobe’s predatory practices, it charged me a small fortune for. I need some way of contacting support to 1. Remove this fee, 2. Reimburse any past payments which have been done without my consent. 

Has anyone seen this before? How do I get this resolved? 
I’ve used the products for this company professionally for myself and my business for a long time, but this shady practice is starting to make me reconsider finding a different solution for everyone, and stop paying a business which appears to have terrible practices.