Vimatel worse Fibre provider in South Africa

I've upgraded my fibre speed to 1000mb speed with my ISP on Tuesday and since then my internet has been down. Been in contact with my ISP support team and they've done all they could do, my account has no outstanding fees and account is paid up to date, my ISPs been extremely busy assisting me and sent me screenshots that the probblem lays with Vumatel. The screenshot included details that said management down, more than 48 hours down and no way to contact Vuma, again today on the support line with my ISP and they did send another support ticket to Vumatel telling them that it's been down more than 48hours and it is extremely urgent as I work from home and my manager is not happy and I'm pretty close to a written warning.