Can i get Refund on adobe stock subscription?

If you cancelled in the first 14 days of your paid subscription, you will get a refund. It may take up to 10 business days to get refunded. Refund is automatic.

Chech if your really cancelled. Adobe sends a confirmation mail (where also the refund is mentioned). 

In addition, you can check your current plans at https://account.adobe.com/plans.

You should have received an email ackniwledging that you cancelled the free trial within the first 30 days. If so, you can forward that to Adobe to,request a credit for the subscription.