Horrible customer service

Yesterday I called the 8ta call centre as I am currently having an issue with my sim card. I have been calling the 8ta since last week every day without any joy. My sim card crashed and I was told to buy a new sim card so they can do a sim swap for me. Yesterday i called and I was 'assisted' by a lady who told me her name was Edwina from a call centre in joburg. After constantly having to repeat myself to her and having to be put on hold for lengths of time she finally told me that she is unable to assist me as her systems are down. She then told me to call again later or tomorrow, i explained to her that i cannot be on the phone everyday for an hour or more and not getting the help that i need for such a small procedure like a sim swap. She then told me that their systems are giving them problems and all of their prepaid team leaders are not at work. She volunteered to call me back at 20:30 she never did as she said she will have to reboot her system so that she can be able to assist me. I'm still waiting for that call my phone is still not working