I really feel for you. This happened to us except it was for 1 whole year that Tru Energy didn't issue a bill and then gave us a whopper $2k one when they finally got their act together.

Every time I called to find out what the problem was and to find out how much we were being charged (we had moved into a new home and I had no idea what our energy consumption was and therefore how much to allocate for electricity in our budget), I was told one tall tale after another (all totally different) and they just wouldn't let me escalate the issue.

Needless to say, I have changed electricity providers because after being lied to so many times, I just don't trust them. Their "apology-for-the-inconvenience-discount" was like $45, which I just found insulting...

I have real sympathy for you and I hope you get it all sorted out in your favour. I just wanted you to know that Tru Energy has done similar things to a whole heap of people