DirectAxis stream of unsolicited emails without cancellation feature

I have seen other posts regarding Direct Axis's unwanted emails & DirectAxis's response that there is always an opt out at the bottom of their emails. Nonsense, they know its a lie (none of my hundreds of emails from them have 1 unsubscribe feature & I have no idea how they came across my email address ) I've been trying to rid myself of their unsolicited emails for months without success. why anyone would do business with such an unprofessional gang escapes me. Can anyone help rid me of this low life company?