Incorrectly billed AGAIN

So, after several weeks of fighting about my very bad adsl connection and my account that is billed incorrectly NOTHING has been done. I phoned accounts and they said the dispute amount was only logged for R300 ***. How dumb are the people at Telkom? I, yes, I created 2 pictures for the things that work in your accounts department. This outlines exactly what the issue is.

Explanation: I had 2 accounts. 1199.. Was for data bundle and 4299.. was for line rentals, calling plans etc. (Why there's 2 account I have no idea)

In August I was charged for Home Uncapped on account 1199.. but also charged for Home DSL Elite bundle and Anytime plan on account nr. 4299.. So Telkom has to deduct R375.53+R306.14 (R681.76 exl vat) for August. End of August I paid R750 as adviced by the accounts department after they "merged" the two accounts".

On my September statements I still owe on account 1199.. (why wasn't it merged? Apart from that, I am STILL charged for Home DSL Elite Bundle + Telkom Anytime Minutes as well as Home Uncapped on account 4299.. Really... So again, Telkom has to deduct R681.76 excl vat) from this account AGAIN (not once, but twice because its in August and September incorrectly billed. The only difference is you billed it in August on two accounts and in September it was both billed on the same account.)

So before I pay ANYTHING again to Tel**** my account has to be deducted by R1363.52 (exl vat.). Can you get someone senior enough that knows how figures work to sort this out