Frustrated with Axxess and MTN

I am very disappointed with Axxess Mtn 4G. I logged a ticket regarding extremely slow internet connection and that the router randomly goes offline on its own everyday and I have to remove the power cable and put it back to reboot because it doesn’t work until I do this. I was on the 50mbps and I upgraded to 100mbps which is where the problems started. Even though even when I was on 50Mbps it would never get to 30mbps it was still functional. After upgrading it still never gets to 30mbps ever. I logged a ticket on 16 March and everytime I'm asked a question when I reply the ticket gets assigned to a different person, everyday! Sometimes I can’t even watch tv because it just stops working. Can’t even open WhatsApp on my phone or a google page. If it’s not that, only one connected device would work not 2 simultaneously. I have been asked to send screenshots of the speed test several times and asked to reset, set it on 4G only, restart, and nothing worked. I completed some questions and it was escalated to MTN only to be told they don’t see any problem. How when I’m paying R549 for 100mbps and I only get less than 30mbps and that’s the max it can reach, it goes less than 10mbs at times. I contacted support on 2 April evening because it had stopped working completely for over an hour and few attempts to reboot the guy told me there’s nothing they can do to help insinuating I might as well just cancel. Next day on 3 April I asked to cancel the subscription only to be told if I cancel month end I’ll be owing the penalty fee of R550 for early cancellation because i have not given 30 days notice. Why am I being charged the 3 days remainder whereas they cannot keep their end of the agreement and from 16 March till now I was only told few days ago that there’s nothing they can do? My job is dependant on me having stable connection and I’m heavily pregnant. The stress of having to explain myself to different people everyday and the frustration is enough. Im tired I just want to cancel this end of April and be done with Axxess.