She paid $1000 deposit on the night of the dinner.
"He was the ultimate sales person. He was as slick as an oil can and very pushy.
"I told him about my back problems and he told me this was just what I needed to take the pain away.
"According to him it was a miracle material that astronauts used."
But when the mattress arrived, Durst says it was uncomfortable and aggravated her pain. "It was half as thick as a normal mattress; I could feel every slate in the bed."
"I realised how stupid I'd been. I spoke to my neighbour [who had also bought one] and she agreed she wanted to cancel it."
It took nine months of calls to Wenatex's Sydney office before the company reluctantly agreed to give her a refund.
The court upheld the Commerce Commission's finding that Wenatex breached the Fair Trading Act and misled customers about their right to change their mind about a purchase that was made in a high-pressure sales situation, such as an invitational seminar.
The Door to Door Sales Act allows a seven-day "cooling off" period during which a consumer can cancel a contract and get a full refund.
The investigation also showed that Wenatex further misled customers by telling those who attempted to cancel their contracts that they would lose the money already paid.
Durst is still out of pocket from a $700 pick-up fee, which she is trying to get back.
"So many people wouldn't have the energy to fight them," she says.
She now has a mattress from Hunters Furniture and describes it as "absolute heaven".
Wenatex did not return calls.