Vodacom LTE service not working whilst being billed for it!!! ******* at 1Mb/sec

I've had a fibre router delivered on the 11 August 2020 and still await the fibre to be installed. In the interim, you gave me an LTE connection with a line speed less than 1Mb/sec which I've complained about since receipt of the equipment. I've spoken to your fibre department, your cell phone department, your billing department and still no success. I'm now being billed for a service that is barely alive (LTE) and when I call for support I'm ignored after countless hours of reporting the same issue. I want my money back and this service removed immediately. I made a BIB mistake going with Vodacom for Fibre!!! I expect a call back from someone senior tomorrow.