Incorrect bill and no one interested in helping me

I logged a call regarding my account that was much more this month than usual. Apparently my data was more, even though I didn't use any more data than usual. I talked to Garreth, and had to call him numerous times to follow up on what is happening. For the last few days I can't seem to get hold of him. Yesterday, I received a message that my call is now closed! It also told me that I need to send all kinds of information for Autopage to retrieve my URL details. This is not necessary, all I need is a statement of my data to show how and when I supposedly used all that data. Also, for someone to investigate and get back to me on what happened, and fix the problem. The message is also very rude and arrogant. Please open this call again and get someone who can actually assist me. This is not the first time I received unacceptable service and I am so tired of Autopage just always shrugging their shoulders.