Cannot cancel the subscription because I cannot access my wrong email

I registered for the seven days trial to get Adobe Reader. Then, I do not see Adobe sending any comfirmation to my email. I relized that I registered an account using the wrong email name. Therefore, I cannot activate that account. Thus, I cannot log it. And then Adobe still charge me for the subscription on that wrong account. I want to cancel my subscription on that wrong account but I cannot log in to it. Can anyone help me, please.