Credit Card Issues

Hi everyone! I was able to avail a trial plan in Acrobat and input my credit card details but I input a wrong email. It went through but I can't modify the email, hence I can't cancel my trial plan. Now it's starting to charge but luckily I was able to lock my credit card. My problem here is that I am afraid to unlock my credit card again because there might had a chance that Acrobat will charge again. How can I unsubscribe to that when I can't open the email? I don't have access to that email in the first place. I badly need help. Thank you.