UNACCEPTABLE SERVICE AND BILLING WITHOUT DELIVERY

Irrespective of having been billed and paid for Telkom Services on a full line (incoming and outgoing) service, they have been unable to resolve problems on my line for the period spanning October 2015 up to and including 18 January 2016. I have now been advised that my line (which I have had for about 20 years) is only for incoming calls and that I must resolve this despite the fact that they cannot provide me with proof of where I instructed them to change the line as well as the fact that my line cannot even dial Telkom Services? The line includes, as it always has, services that I pay for (and am currently doing) which relate to outgoing services.