Amount refund request

@yashu_6623 Honestly, I would look at your account. Did you purchase this on your mobile device may it be Google Play Store or Apple App store, you need to contact them directly. Adobe does not have access to your accounts and billings. 

Here’s how to cancel based on your subscription type:

On Android: Use our automated cancellation form to submit your request. It only takes a few moments. On iOS (iPhone or iPad): To cancel your subscription, follow the instructions outlined in the help article.

You had mentiond that you downloaded a trial version, and even though you may not have used it, you still downloaded the trial version. Even though you cancelled in November 11th, it will also depend on time zones too. So, if you signed up on your local time, but their billing clock runs several hours ahead in your time zone, you may have missed the cancellation window according to their system, even if it was still the 11th for you.

For more information to cancel: https://community.adobe.com/t5/adobe-scan-discussions/how-to-cancel-acrobat-mobile-or-scan-premium-subscriptions/td-p/15427706

Again, if this was done on your mobile device, you need to go through Apple or Google, and Adobe doesn't have access to your billings or accounts on those platforms