Where to from here cause I'm at a loss

I am officially at my wit's end, a technician came to my place because of the issue I was have with an unstable connection. I was asked to monitor if it happens again and what do you know it's still happening. I reported the issue and still nothing gets done, as I'm typing this I'm getting 0.4mbps on a 100mbps line and no one at vox gives a damn. I have sent screenshots with my complaint and once again the only response I get is an automated email. The night before was an unstable network the whole night and today is the same thing. This company takes my money every single month without fail in full and yet I'm left without a proper internet connection.