Adobe free trail from HELL

I signed up for the 7day free trial of Adobe when the Google Playstore advertised it. As in the past, I expected an email informing me that the free trail is expiring soon, and if I wanted to opt out of the paid version, I should do so before the next day ect. I never received that email, and now Adobe keeps debiting my account with ridiculous amounts, which I can't afford which lead to my account going over into a negative. But that's not all. After many unsuccessful attempts at canceling the account, with a ridiculous effort of contacting the customer service, I am forced to go to the bank to have them blocked from further debits, which costs me banking fee's every damn day!!!!!!