Pathetic customer service

I have a mobile contract with Telkom mobile- account number ***. I must say I am truly disgusted with their service, they have no regard or whatsoever for their clients. I have had a pending complaint with them since the 4th June 20 upon realization that my 24 month contract renewal date is incorrect. I renewed my contract for a further 24 months from July 2019, the device was delivered to me on the 12 July 2019 but to my surprise when I check my next renewal date on *147#, the system says I am due for the next upgrade in December 2022 instead of September 2021. The worst mobile network in terms of customer service. My case number is ***2 and has now been pending for over 4 months and the issue has still not been resolved nor have I even received any call from them as promised on the 4th of June 20. At some point I was given another case number ***0, but to this day nobody is bothered at Telkom to attend to my query. I am in a verge of taking this matter to ombudsman, I am just fed up with Telkom. When you call and ask to speak to the contact Centre manager, all 3 instances I am told that the managers are in a meeting and they will get them to call you back and then nothing happens after that. It’s easier for them to pocket the money every month, I wonder how do they sleep at night, getting paid for doing nothing.