Telkom's disgustingly terrible service

I app**** for an online only deal in January 2018. This deal was meant to give me about 15 GB of data each month. Unfortunately Telkom had processed the incorrect deal for me that resulted in me receiving approx 2 GB of data each month for the same amount of money. For many months now I have been trying to correct this and each time their best excuse is "we have opened a case". This so called case (if it even exists) has never gone any further. Since trying to speak to Telkom employees is useless, I've decided to write this review so people understand just how terrible their service is. Telkom definitely has no problem in taking the money each month for this contract but cannot resolve a simple issue (which is their fault) that I have been complaining about for months.