Pathetically poor customer service

I have had the worst experience with Telkom customer services both in-store and call center. After attempting to take out a new Telkom mobile contract at the iStore it was picked up that someone had used my ID number to purchase a prepaid sim card. I then went to the Telkom store with my ID, the assistant (who was very reluctant to his job) said he cannot help but can log a ***** case, he then proceeded to do this on his system. After what felt like an eternity he wrote down a case number and said someone from their ***** department will call me. HOW??? He did not even take any of my details. After a week I called the call center and the lady who was supposed to assist says she cannot do anything as she can't verify that what I am saying is valid i.e my ID number is linked to the incorrect details. She then proceeded to scream over me and not listen. This is why customers stay with the more expensive networks.