Refund dissatisfaction

I have taken the subscription of modifying texts, i.e., premium version of Adobe scan and while I was subscribing there was a message on screen from Adobe only that for 7 days I won't be charged anything if I cancel before 7 days. I cancelled my subscription within an hour only and still monthly subscription amount of 890/- had been deducted from my account. 

I request Adobe to refund my amount as I subscribed today only and cancelled within an hour of subscribing.

If Adobe doesn't refunds my amount then it's a kind of dissatisfaction that no one would recommend to take a premium subscription. So I request Adobe to please take action ASAP and refund my amount back.