Dropbox. 8 month billing issue with no proper help

I have asked Dropbox to cancel and reverse a debit order which has been going off for 8 months now. I have struggled with back and forth tickets for 8 months. Nobody at Dropbox can tell me why I am being debited for a service I am not receiving. I am not using dropbox and apparently Dropbox is unable to tell me which email is associated with my so called account.

Fed up