Billion rand firm won't refund R429

On the 19th of Dec 21, I paid R429 for fibre with Vodacom as my isp and Vumatel as my installer. I waited for them to install and nothing so I contacted them and on the 31st of Dec 21, it was finally installed. I was told by the installer that I would be sent a link with the password and username. By the 2nd of Jan 22 I had not been sent the link so I contacted both firms to access my router. I was sent back and forth until the 5th of Jan when I finally cancelled and requested for a refund. On the 6th of Jan I was called by Vodacom and told to switch off my router and wait for activation, I told them that I had cancelled and was awaiting a refund. To date, I have called, emailed and DMed vodacom for my money and the story constantly changes...they won't give me my money.