A ruthless South African gang tortured a British couple with a blowtorch during a home invasion, killing the woman and severely injuring her husband, according to a new report.

Three intruders descended on the farm in the rural town of Dullstroom, South Africa, at around 2 a.m. Sunday and climbed through a window while the couple was sleeping in bed, The Sun reported Thursday.

The terrified victims — identified as Sue Howarth, 64, and her hubby, Robert Lynn, 66 — were roused from their slumber by the sounds of their window shattering and their dogs barking.

“They were wearing balaclavas and attacked us,” Lynn told The Sun, describing how the trio pistol-whipped them and ordered them to the floor.

“They kept on asking where the money is. I told them that we don’t keep money, but they would not believe me,” Lynn said, adding that he turned over some cash in a money clip along with his bank cards.

The callous crew separated the couple and then tied Lynn’s hands with twine while cutting his head with a knife and using a blowtorch on his chest and legs.

“They were looking for things we just don’t have,” Lynn recalled. “I said to them that whoever gave them their information, gave them the wrong information.”

One of the thugs sneered: “No they didn’t,” according to Lynn’s account.

Lynn said he repeatedly called out to his wife, who was brought to another room, but he could only hear her groaning.

The gang eventually loaded the couple into the back of their Nissan pickup truck. They covered Lynn’s head with a black bag.

“I suppose they wanted to suffocate me, but I managed to bite a tiny hole through the bag through which I could breathe,” Lynn said.

The suspects drove them to a field, where they dragged the couple out of the truck by their hair and ordered them to get on their knees.

The threesome then went to town on Howarth, beating her so badly that she suffered skull fractures before shooting her in the head. They also burned her breasts with the blowtorch.

“That was the last thing I remember. I thought I was dead after that until I looked up and saw the stars,” Lynn told The Sun.

Lynn miraculously freed his hands and crawled to the road.

Two friends driving by spotted him and quickly drove him to a local hospital, where he was receiving treatment for serious injuries.

Lynn was devastated by the news of his wife’s murder.

“Susan was a great girl. She had a great life — just to end up in a ditch with her hands tied behind her back,” he told The Sun.

Police were searching for the unidentified perpetrators.

The crime comes less than two weeks after a mom in Polokwane was stabbed 21 times and had her eyes gouged out in another home-invasion robbery that police said was the grisliest crime they’d ever seen.