During the inquest it the death of Millie Thompson it emerged that the 999 call handler admitted making two "fundamental" errors in responding to the report.
After terminating the call, North West Ambulance Service employee Aaliyah Ormerod said:"Jeez, stop giving me information."
Ms Ormerod conceded in a statement to the court that she wrongly graded the call and did not recognise it as an immediate life-threatening situation which meant a rapid response vehicle was not sent to the nursery.
She also admitted she should have stayed on the phone until the ambulance arrived.
The coroner said he expected her employers to take action over the end-of-call comment which he said had "added insult to injury, quite literally".
More top news
The former Deputy Speaker of the House of Lords has resigned following allegations he took drugs with prostitutes. But who is he?
A murder investigation has been launched after a man was fatally stabbed and another injured in an apparent attack at a house in York.
Enraged after a thief raided his favourite local restaurant, a tough-talking US cop is using the internet in a bid to track down the culprit