Vodacom LTE Totally useless.

I've taken out a 50 Mbps UP and 50Mbps down LTE SIM with a router. I got my router at the beginning of July. I've been getting slow speeds from the start, mostly around 2 Mbps upload, sometimes even lower!!!. I've spoken to multiple agents and sent around 20 speed test screenshots, and all they do is just troubleshoot and elevate the issue. I'm working from home and also streaming, which I cannot do at this moment due to the speed that's low. No one comes back to me, and if one of them says to elevate again, I am going to scream Please give me a proper solution for this issue, or cancel my contract. WITHOUT ANY PENALTIES SINCE VODACOM IS IN BREACH. I am paying for something that I cannot use. Please also come and fetch my modem and refund me the full amount, plus 3 months of paying and not receiving. I cannot work like this anymore. Even their email address is a joke!