Ignored queries and overcharged account

I have two data accounts with Telkom and I was overcharged in the August and September statements. Normally my account is R305 and I logged a call on the 17th of October 2017 for the 2 over-payment. The first case number of the 17th October is ********** 9 and it was resolved on the 3rd of November 2017. The November account was less with one months over-payment. I logged another call on the 13th of November seeing that not the whole over charged amount was reversed and the case number is ********** 7 and this case was never attended to. I inquired a month later I was told a certain manager will contact me.

On the 4th of January I made a follow up on call ********** 7 and I was given a new case number ********** 9 and up to today i have not received any response.

Telkom is this fair that it will take over 3 months to attend to this, its totally unfair. I'm due for upgrade on my other network contract and I was considering Telkom but with this bad service I wont.