Derek Sauter, 60, used his mobile phone to request medical attention after his pleas for help were ignored.
But when the doctor arrived he was turned away by ward nurse Caroline Lowe, who said Mr Sauter was 'over-reacting' and threatened to confiscate his phone.
Eight hours later the grandfather-of-three, who was suffering with a chest infection, was dead.
Rather than offering sympathy to Susan, Mr Sauter's wife of 41 years, Miss Lowe later told her that he could have been prosecuted for harassing the doctor on call.
Yesterday his daughter, Ruth Sauter, 42, said she was appalled at the way her father, a former administrator for the Healthcare Commission, the former NHS watchdog, had been let down by the NHS.
Billions wasted on the NHS and yet this poor man dies for want of a glass of water.