So imagine Robert Shadwick's shock when he received a mobile bill for £1,046 – as his operator insisted he had been chatting on a single call for 43 hours straight.
Mobile phone company EE blocked the 65-year-old from using his phone and even tried to take the money from his bank account by direct debit.
The problem was caused by a call he made with his EE phone to mobile operator 3 on May 10.
Mr Shadwick was checking when the contract on his second phone expired and the call lasted about ten minutes. Ironically, if he had used his 3 phone to make the call it would have been free.