Slow slow speeds, not getting what I'm paying for

For the love of God, please explain how Supersonics support email can be a unattended mailbox, kinda says it all !!!!!

I am paying for a 10/10 line and for the past 2 weeks I am lucky to get 3/3 as a matter of fact I have never gotten more than 3 on upload speed. If this is not resolved asap, I will be short paying my account as it's only fair to pay for what you get and I will be in contact with The Communications Regulator and Consumer Ombudsman