Miller Pata and Linline Matauatu dropped the first set of their quarter final against England 23-25 after squandering six set points.
The Melanesian pair trailed 14-18 in the second set but rallied to win 21-19 before clinching the decider 15-12.
Miller Pata said they never gave up.
"On the first set we worked really hard to get back up and we [were] down again on the next set, so we talked about the strategy and strong beliefs we can win the next match."
Linline Matauatu said they were made to work hard in all three sets.
