unable to cancel adobe sign subscription

my boss and I on friday removed the two users on our account but our account is still being billed.

being unable to contact anyone unless we login in is intolerable. Not even having a phone number is not good.

How can we completely cancel our account?

Also, trying to post here is like an effort in futility.

Thank you.

Leon Zetekoff

Manager of Strategic Partnerships

My Internet Support, LLC