My experience was rather different!
SQ flight from SIN to SYD.
I completed an online form (how efficient, I thought, how wrong, I was) and even checked the box to pay the taxes rather than deduct the points.
Three weeks pass ... I've received no email notification that my form was received, no notification that my flights were cancelled. No refund of points or taxes. But the booking was removed from "My trips" and the PNR no longer worked in "Manage my booking" so at least I knew it was cancelled.
So I called the Virgin Customer Service team (what an oxymoron). Was advised they don't send cancellation confirmation, but that he could cancel my booking there on the phone. I asked him if it was actually cancelled at that point and he said no??!!
The actual process was swift and points refunded instantly.
He then asked for my credit card to charge the cancellation fee ($60 per person). I asked him to deduct from the taxes that he was about to refund. Nope, can't do that.
So he charged my card $120 and then refunded the $600 ish. Oh, and they don't refund the credit card fee that you paid when you made the payment.
Then I asked for a receipt for the $120. He had to put me on hold for that one as it was - and I quote - "an unusual request".
Several minutes passed and he came back on the line ... they couldn't issue a receipt for the cancellation fee but they could send through a trip cancellation notification and that would show the cancellation fee ... would that be ok?
So they can't send through a notification of trip cancellation when they actually cancel the trip, and they can't send through a receipt / invoice for the cancellation fee, but they can send a trip cancellation notification instead of a receipt.
I swear the back end of Virgin makes Qantas look effective.