A man whose wife was taken to hospital in an ambulance after suffering a leg fracture says a call from debt collectors was the first time he was told money was owing to Ambulance Victoria.

David, whose last name has been withheld, came forward with his concerns after it was revealed yesterday that a good Samaritan was chased by debt collectors after she called an ambulance for a stranger who had been hit by a car.

This is the second case of private debt collectors chasing a Victorian ambulance service bill, with another incident being report in regional Victoria back in January.