******* Hosting company, with extremely bad support

So out of the blue this company sends me an Invoice for bandwith overidges on my Reseller (Windows): Medium server, I did not receive a warning about it nearing 100% nothing just an invoice that does not make sense. Seems that they also plucked up the courage to slap 2 months overidges on me... For which I have received no notification or warning! Interesting though when I go on the server and delete stuff to free up space.... NO CHANGE IN USAGE...I SUSPECT 1-Grid is trying to make money in any possible ******* way they can!! I have spoken to one of their support staff who said it was unacceptable and he would follow up and revert back to me... and yes you guessed it he never came back to me!