"As soon as I opened the door, two Māori guys came round the corner and one of them was dressed all in red - they were definitely gang guys," Louisson said.
He said they demanded drugs and money, but when he said he did not have that, there was a "scuffle" and they threatened to "beat" him up.
"As I managed to get away from them, two more appeared, so there were four of them, and I can't handle four guys, maybe one but not four."
Louisson, in his mid 60s, fled to his neighbour's house, waking them up in the process, and called the police.