Cell C Fibre to Home provides lower speed than what you pay

Cell C Fibre to the home is supposed to provide me with 250mbps up and down, however i am not getting this when i run the speed test. It varies between 87up and 12 down. This causing buffering on my devices and streaming. Called and logged many calls, but the support is useless. Tried escalation to manager for a technical to come help test and resolve the problem, but the support line talk jargon and sent me to conduct my own troubleshooting using a LAN 4 cable 9 not sure what that means), only after doing all three 3 complicated tests, and have screenshots are they able to provide a response. Being a non tch person, i have no idea what the jargon means, nor do i have the LAN 4 cable, so its a dead end. Cell C Fiber will lose its customers based on the bad user and non-responsive feedback. I am opting for cancellation and move directly with the OEM ( Metrofibre), but cant seem to get that even right. Would not recommend Cell C Fibre unless they change their support line to a technical support that can actually help, rather than a pass tru admin collection line.