Bad Internet Service and Billing

I keep posting complaints since the beginning of the year and every single time someone at Telkom gives me a different story. Its like nobody at Telkom know whats going on in the company or know how to do their job properly. I filed a line problem on Saturday due to very bad internet. The Some idiot technician phones me just to let me know I am on a 2mb line and if it decreases to lower speed is because im 1 of 40 people sharing the same Network. Just the other day another technician tells me its because of someone with an electric fence that causes the internet to become worse. I can write a book about all the different feedback I got this past year about every single thing Telkom tells me about my internet... Telkom is probably the worst company I have ever faced regarding a product. Saturday I phoned about my line being bad and complained about paying for 2 lines as well because we payed for 1 line and did both ADSL and voice on that 1 line. The person tells me that we only use 1 line and that the other is disconnected. So we pay for a separate line for the past year and a half? Answers please!!