No Service SuperSonic

This is absolutely ridiculous service provider on the grounds that we are not being provided a service, continuously calling complaining loging tickets where another isp was contacted and we where told there is no reason our internet should be this bad. For the first month we got approx 80% of our line speed now we struggle to keep 5% we started complaining from the 3rd of November because we thought this to be a area issue but after requesting to speak to managers we are ignored.