A mobile phone firm has apologised to a customer for wrongly sending him a £500,000 bill.
Vodafone blamed a "clerical error" for the huge demand sent to James Abdale, 28, of Thorpe St Andrew near Norwich.
The firm is also investigating Mr Abdale's claims he spent two hours on his mobile phone trying to resolve the issue with customer service staff.
"We've apologised to the customer," a Vodafone spokeswoman said. But his comments were taken off their website.
Mr Abdale aired his complaint on the Vodafone website, claiming at one point he was told the bill might be accurate.
The spokeswoman said: "He has lodged his grievance in our online forum.
"We are investigating to find out what happened in that two-hour window.
"We will continue to liaise with him until the issues are resolved."