I accidentally subscribed to Adobe Photoshop, can I get my money back?

When did you order?

The free trial is 7 days from the time you downloaded & installed the software and also gave Adobe your payment card details.

Were you trying to order another product instead of Photoshop?  Which one?

Log-in below with your Adobe ID and password:

https://account.adobe.com/plans

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How do I Cancel my Subscription?
https://helpx.adobe.com/manage-account/using/cancel-subscription.html
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Subscription & Cancellation Terms:
https://www.adobe.com/legal/subscription-terms.html

CONTACT ADOBE SUPPORT:
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Online Chat: https://helpx.adobe.com/contact.html?rghtup=autoOpen
Phone M-F, during normal business hours: https://helpx.adobe.com/contact/phone.html

If you are still in your 14 days after taking the subscription, you can cancel and your paid amount will be reimbursed.

If you are over that grace periode, you have legally acquired a one year subscription of Photoshop. 

You may cancel by going to https://account.adobe.com/plans , click manage plan and click then cancel. You are however asked to pay an early termination fee of half of the remaining due.

If you have trouble self-canceling your plan, you need to contact Adobe customer care. Adobe customer care can be contacted by beginning a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen. Pop-up blockers need to be disabled! If the chat window fails to open, or is non-responsive, use a different device to start the interaction.
Support phone numbers may be found here: https://helpx.adobe.com/contact/phone.html. Please note that phone charges may apply.

(see also here: https://community.adobe.com/t5/creative-cloud-services/how-to-contact-adobe-support/td-p/11875703 or here
https://community.adobe.com/t5/account-payment-plan/how-to-contact-adobe-support/td-p/11843852)

(moving this to accounts and plans forum)