Complete and utter lack of service...

I have repeatedly sent e-mails on behalf of a subscriber on our company's business account at Vodacom. Initially, I had a response, but since the subscriber does not decide upon any matter lightly and further queries ensued, all further inquiries on my part have simply been ignored by Vodacom. It is as though anything I still wanted to know was of no importance. All my requests were logged via the Western Cape Business support center to the account manager and while the WCV Business centre normally confirms the receipt of all service-related e-mails and also points out any e-mails to the account manager when necessary, this time around, there is no response from anyone. What is the purpose of an account manager and in effect also the support center if one cannot rely on them to respond to any requests when needed? This is the worst case of lack of service I have ever experienced from Western Cape Vodacom Business and after all these years of working with them I really expected more.