Vodacom Business does not attend to customer complaints

I have been trying to get assistance from Vodacom business for our problematic LTE at the office. I had been in discussion with Vodacom over Twitter in July because their call centre would not recognise my LTE mobile number. I then managed to get hold of the call centre on 14/10/2020 to log a complaint. After receiving an email with a reference number on the day, I heard nothing so I called them on 26/10/2020 and they told me that they are escalating. It's 28th today and still no response from them. I again contacted them via Twitter and they once again referred me to the call centre. I am going round in circles here and I am fed up. I have an LTE service that is not working properly and I am stuck with a 24 month contract, and I am getting no assistance from Vodacom.