Can't Access email to cancel subscription

Hello,
I have an old account that was created with a former company email that I no longer have access to, and need to cancel my subscription. 

I remembered my password, so I tried logging in to cancel the subscription, but it said it sent a confirmation code to the old work email when I tried (which I no longer have access to and thus could not login to cancel).

I tried using the "other code methods", but cannot remember enough information about the account to get a code to login. 

Can anyone help? Just trying to cancel the account since I no longer use it and have not used it for months and months now. 

I have proof of charges in my card statements, and a screenshot showing proof of my card being connected to the account.  

Appreciate any help!