I didn’t make a purchase

I got charged with an app I have on my phone, PicsArt but a membership of some sort that I never purchase. It cost over 50 dollars and it took money from my PayPal and card. I never made that purchase, I did the 3 day trial months ago and I canceled it immediately. I never bought anything on that app and now I’m being charged 50 dollars? It is possible to request a refund or something because I didn’t purchase anything willingly, the app practically stole my money because I never bought anything from the app!