Investigations into high bills do take times, especially if meter reads need to be verified etc. I can take a look as to where it's up to if you haven't received any communication from us though if you could please message me your account details. Thanks!
Apologies, but you'll need to send that information via private message as this is a public forum and for privacy reasons we don't want your details out for everybody to see. To message just click on my name and that will bring up a new page with the option of sending a message.