Overcharging still not sorted out

I upgraded/renewed my contract in June 2014. Telkom's service provider loaded the deal wrong causing an over-charge on my account for R80/month.<br> In November I contacted them and was promised a lower premium for the future.<br> They fixed the contract, but then started charging me for an internet deal that was part of my original deal.<br> My stop order is not run for 2 months, I make payment for 1st month. During second month I e-mail them to find out what is going on, but the only answer I get is cut lines!!!<br> What can I do to get this sorted out, Telkom?<br> I am sick and tider of getting reference numbers when I report a problem, but never get an answer again, not even when things get sorted out - I can only wait for my account for the next month to see what you have then messed up.