I would like you to cancel the charge of a subscription since I canceled it the day my free trial ended and in the same way they charged me

I need you to cancel the charge of the annual subscription since I don't have money to pay for it and this charge is not letting me use my Apple Store account for new app downloads that I need, I received 7 days of free trial and the last day I canceled so that I would not be charged but in the same way they charged me, I can't pay and then give me a refund because I don't have money right now