problem with app payment

hello. I turned on the free trial in the PicsArt app and it billed me for a year's subscription in advance. payment failed due to lack of money on the card. I don't want to renew my subscription and use the app. I can't cancel my subscription and when I top up the card, it will debit my money for a year in advance. please help i dont know what to do

I can't cancel this subscription