Re: And I thought my home bill was bad..
Many years ago when I got DSL it was on a promotion with "unlimited data for 6 months". At the end of 6 months the used bandwidth totals were still 0. Emboldened I would download more and more.
One day the ISP fixed the metering and I discovered a wonderfully high bandwidth bill as I had consumed many many times my allowance. I rang the phone company and was able to negotiate my way onto a higher tier with a larger allowance and they kindly back-dated the plan change - saving me thousands.
That would be the end of the story except the next month my account was still on the low tier and the charges had not been reversed and I still had a massive (and now overdue) bill. I rang back, somehow got the same customer service rep, who then informed me that as he had been updating my account his computer crashed and he lost the change. He again back-dated my plan change, applied the credit, etc, and I was saved from Debtors Prison.