Just requested a refund for a Qmiles booking given my flight is now in a few weeks and it sounds like I'll be cutting it a bit too close if I leave it any longer from the above reports! Of course, the refund request confirmation that came up after I submitted the details online has randomly switched from English to French...
Also, why QR is unable to design an IT system that automatically fills in the details of the booking you'd like to cancel in the online form when you click through rather than making you do it all manually I have no idea.