Computicket refusing to refund my flight ticket which has been cancelled.

Computicket refusing to refund my flight ticket, I purchased return flight tickets for British Airways from Cape Town to East London for September and when I contacted British Airways I was told that all the flights have all been cancelled and they told me to ask for a refund from Computicket. and Computicket is refusing to refund my money until they get communication from British Airways advising them that the flights have been cancelled.

I want my money back so I can book alternative flights if all British Airways flights are all cancelled.