Adsl Contract: June 2017 Installment: Overcharge by Billing Department: Credit outstanding for 3 months

I turn myself now to Hello Peter for assistance, as Im getting sick and tired of Telkom's pathetic service and empty promises! For 2 months now I have been lodging complaints about an amount I was overcharged in June 2017, to no avail. Everytime I'm told it will be rectified the next month and that I will be duly credited. Im subscribed at Telkom for a 24 month Adsl contract and my contract bill amounts to R716 pm. However, I was billed for R801.20 for June 2017! Upon checking my previous statements, I noticed that Telkom erred by not giving me the correct discount amounts on my bill. I lodged 2 complaints during June and July and was told everytime that the error was due to a system glitch and that it will be rectified in the following month's account statement and that my account will be duly credited. I was also informed that I should pay the full amount of the bill each time. The Reference No's of my complaints are as follows: 19 June : ********** 1 15 July : ********** 2 Andy from Telkom phoned me on 21 July 2017 and assured me that the incorrect discount of June will be rectified in my August statement, that I will be duly credited and that I will only have to pay R639 for August. However, on receipt of my August statement, I noticed that I was still not credited and charged the normal amount of R716! I just like to know from Telkom what their problem is??? Why cant they just rectify their own damn mistakes and why do clients always have to go to extremes in order to get their money back??? This is totally unacceptable and I can assure you that I have made up my mind to terminate all my services with Telkom, once my Adsl and Mobile contracts have expired. Nobody deserves such a lot of nonsense and poor service!