Paying for service not receiving

<p>According to the accounts department - I am paying for a 4mb line</p> <p>According to the technical department - I am subscribed for a 2mb line</p> <p> </p> <p>Not their problem (apparantly) as they cannot communicate between the 2 departments to fix the problem.</p> <p> </p> <p>Have previously reported a problem - was told there is none.</p> <p> </p> <p>Please explain this ... or pay back my money that I have paid for a service that is non-excistant?</p>