Dismal internet

Dismal internet speed day after day. I find myself really regretting leaving Telkom ADSL. I regularly get internet speeds of less than 1Mpbs on a line that is supposed to be 20Mbps. On very rare occasions, typically at 5am, I get decent internet speed. My service provider is Home-Connect, but I assume the issue is with the Vumatel infrastructure. If not, please advise, but please don't shunt me around.

The average customer rating for Vumatel on Hellopeter does not fill me with confidence that the problem will be resolved, but if not, I expect a full refund, including on the non-refundable installation through Home-Connect.