Billed for 2 lines

Few months ago I upgraded my 10mb telkom adsl line to a 20mb line.

A week or two later the technician phoned me and said he activated the 20mb line. When I got home I did a speed test and saw that it is still running under 10mb. Constantly checked and still 10mb.

August 17 I phoned and enquired about the line speed. I realized that they added a additional line and started charging me for 2 separate lines. Every month I phone accounts and tell them that I only have one line and not two. They normally refer me to sales to sort this out. So I do as I'm told, and end the call confided that it's sorted just to get a bill again for two lines with 10mb line speeds.

Last month after I phoned again I could see the speed was up a little. And still two line bill.

I just want to know how can you struggle so many months and pay an increased bill and take it. I have been a customer for more than 10 years. I just refused to pay my bill this month. Getting SMS to pay, get someone in a propper position to phone me and ask for my money seeing that you can't even correct one mistake your sales person made.

Im a very reasonable person but this has gone to the point where a attorney needs to get involved to get water out of a rock.

Newest reference after phone call again today for cancelation ***A

How do I know this time anything will happen? Send me a new invoice rectifying your mistake and I will pay. My account number ***