How to refund

So hello there, I have an issue with Adobe product, I tried Adobe Acrobat trial and after trial period I had no money on my account so it automatically created some notice to pay for upcoming month and because of that I could not even cancel my subsrciption anymore. Later on, multiple days after my money arrived on my bank acc, and instantly like 1 hour later money for Acrobat were automatically charged, so I asked for refund and cancelled my subsription with left feedback text about my experience. Next month I got the notification again after cancelling? Refund didn't go through apparently so I didn't get money back for my first month, and it also charged money for another month out of nowhere? I didn't use that app single time after the trial period, I'm sure adobe has their data about that so yeah. I don't know how to get refund for this, who or where to contact adobe, because on the support page there is just 1 million articles without any connection to an actual person on live support. I recently talked with my bank and will issue a chargeback for both payments with cancelation of my debit card, and getting a new one, unless Adobe will do a refund.