Branching into a new discussion,
Sorry to hear that you are facing issues while cancelling your Stock subscription. I did go through your account details and noticed that you have 10 images a month (one-year) subscription which was purchased on 16th of January 2018.
Also, I see you have an on-demand purchase as well for which you were charged 76.79 EUR on 16th January 2018.
Note: On-demand purchases are not refundable.
If I understand correctly, you want to cancel your Stock subscription (10 images a month one-year plan). Please confirm the same so that I can further assist you.
You may also contact our support team Support FAQ: How can I contact Adobe for support? for the cancellation requests.
I do not expect to be refund for my on-demand purchases of course but yes i confirm i want to cancel my Stock subscription of 10 images a month please.
Let me know if i have something to do on my side to make the process easier.
Thanks for your quick answer
Please check your private message for more information.