Email system, some sending failures, blocked mailb

After complaining that SOME of my sent emails do not arrive at their destinations, I was told the startling news that my Telkom mailbox has been stopped since January 2014. What is even move startling is that I continue to use my Telkom mailbox (even though only 95% successfully) and I continue to receive invoices for my email domain service, and I continue to pay for such service!<br> I have been put through to all relevant departments (Sales, Billing, and Technical), and no one has the foggiest as to how to address/fix these issues. I have been complaining about the occasional sending problem for almost a year now. I have received several reference numbers, but there is NEVER been any follow up.<br> The level of knowledge is extremely poor and the call logging and problem resolution process within Telkom is not functioning.<br> I cannot afford to shutdown/change my email address/domain. The issues need to be resolved.<br> To date, Telkom has been absolutely atrocious in this matter.