Paramedics were delayed by youths who tried to attack them as they treated a heart attack victim who later died.
Mr Bell had been bowling in Ashton-in-Makerfield
At one stage the crew was forced to leave the scene as three youths shouted abuse and attacked them.
Norman Bell, 84, of Newton-le-Willows, Merseyside, was playing crown green bowls at a club in Ashton-in-Makerfield in Gtr Manchester when he collapsed.
A spokesman for North West Ambulance Service said the experience had been "frightening" for the crew.
"Paramedics are not used to being called to give medical assistance and being treated in such a way," he said.
Greater Manchester Police are investigating the incident which took place at Council Avenue Bowling Club at 1945 BST on 19 July.
A GMP spokeswoman said the incident happened after a motorcycle was put in the path of the ambulance.
"The driver of the ambulance got out to move the motorbike, when it is believed three people ran over to him and stood in the way," she said.
"They shouted at him and threatened to assault him."
Mr Bell's partner of 14 years, Irene, said he was her soul mate.
"He was great, I loved him. We were friends, good mates, we went out everywhere. I miss him," she said.
"What sort of people are they that can do that? It's time something was done about it."
His son, Peter Bell, said: "I just hope they have a conscience, and that they learn just what has happened.
"I hope it might just make them think again."