Telkom account

I logged a dispute with Telkom ref no ********** 6 three weeks ago and was told that within 14 days I should get a response. My account has been overcharged with calls outside the weekender and after 7 free calls since January 2018. I changed my account 3 times last year when I called in as it was never attended to on the first two attempts. My land line amount has also drastically increased from February till now without any notification. I am appalled at the service of Telkom and that they are not concerned with their customers!!