A 62-year-old man claims he was told to walk 23-miles home, after being discharged from West Wales General Hospital in the early hours of New Year's Day.
Peter Rees was admitted to the Carmarthen hospital's accident and emergency unit by ambulance after suffering from breathing difficulties at home in Llanwrda, near Llandeilo on the evening of December 31.
After blood tests and x-rays, Mr Rees was diagnosed with a chest infection, prescribed strong anti-biotics and discharged at 2am on New Year's Day.
The father-of-three said he asked for help with transport as he didn't have his wallet with him, but claims he was told by a nurse to leave the hospital.
Mr Rees said he explained he live 23 miles away, and his partner didn't drive, but claims he was left to walk home and covered 12 miles before being given a lift by a passing police car.