We sent a document to a member, the member did not complete the process, however, they kept receiving emails for the document. How can we stop the emails to our members?

Void the envelope which would stop the Reminders. Or Correct the envelope go to the Advanced Options and turn off or change the Reminders. Reminders are set on a per envelope basis but they can also be controlled globally to whether Reminders are even enabled (must be changed by a DocuSign Administrator).