Telkom double charging, not following through on promise and generally being

Telkom is double charging me for the past 3 months, ignoring my chats and just giving me reference numbers during calls.

A brief sequence of events:

Signed up for Telkom 4mb Uncapped, could not get a correct username / password as their systems were down - got a data account from Afrihost (username / password worked within two minutes!). Gave Telkom two months to get me new username / password - nothing.

Decide to cancel the data portion of my account and upgrade line speed to 8mbps - consultant extremely helpful and quick. New speed active within an hour and promised data portion will be cancelled as of immediately!

Get new invoice, charged for line speed upgrade and data! After multiple calls to Telkom I just get reference numbers and no resolution. Past two invoices were also double what they should be!

Will cancel account as soon as I am no longer waiting for the call center to answer! Been 30mins!