Refund from Samsung Galaxy Store Is Being Denied

I have been corresponding between Samsung and Adobe since 04/18/2021. The latest email from Samsung stated: "Kindly note that a refund is only in order if you encountered an error while downloading the application and you were charged for it but you did not get it on the device, in case that an application that you purchased is not working or in other store related issues. In this case, since you can successfully use the content on the device, I would kindly inform you that unfortunately a refund is not in order."

But I have to say I am really disappointed with the adobe's premium subscription. Unfortunately the premium subscription did not allow me to accomplish what I was hoping it would, when converting the .pdf into a .docx, Adobe's software turned half of my document into symbols. I tried to do what I could to remedy the issue but unfortunately it continued to do the same thing every time. That is why the premium subscription was effectively rendered useless and I decided to not move forward with the premium subscription.
Which leads me to my second issue, which is that it was very unclear to me how to cancel the free trial before it ended. I tried canceling from within the Adobe app twice but could not figure out how to cancel. I also tried going to Googleplay to cancel and could not find any type of subscription on any email. I assumed it was not showing in my account until I received a bill for it. I, unfortunately, did not realize I had downloaded the application from the galaxy store. Therefore, also having put the free trial, and now the premium subscription, in the galaxy store aswell. I believe this is unethical to not allow a grace period for refunds. I contacted Samsung on the very SAME DAY I was charged after I realized it was the galaxy store that had charged me and not Googleplay. I was then made to correspond back and forth between Samsung and Adobe and eventhough I tried to cancel the same day, I am being refused a refund. Samsung has provided me with an email that has directed me to this forum. So I am hoping to see if anyone on this forum has any insight or can remedy this situation by finally providing me with a refund. 

I would also like to add that I canceled the subscription on Samsung once I learned it was placed through the Galaxy store. But unfortunately since I've already paid for the year, my current subscription doesn't end until 04/18/2022. I would like to cancel the current term so that I may receive a full refund. 

Thank you,

Karina Monterroso