ERROR - .was considered unsolicited bulk e-mail (U

Vodacom's SMTP rejects many of my emails through no fault of mine - ERROR - .was considered unsolicited bulk e-mail (UBE). This is an ongoing problem they have with other clients too. I logged a report 2 Oct. It is now 23 Oct and to date no results. I still get emails rejected. This is bad for my business. I spoke to: Siphokazi, Afsana - who needs retraining as he insists I take my phone to the nearest vodacom shop when it is their SMTP fault, and Bulelani Skulu who promised completion on 08 Oct. The sim involved: ***.