It's been taking around 4 weeks for snail mail to SRB's office to be turned around, and slightly longer when I said, "No more miles please. No more fobbing off. Just answers, thanks".
The chap in SRB's office had actually taken the time to go and properly investigate my comments, and come back with answers from the responsible persons in VS.
I didn't mind that it took a bit longer to do that, but it's still pretty sloppy when my mum, who works for a public-facing Government Agency is expected to turn postal enquiries around in 7 days, and send holding replies, and regular updates if that's not possible.
Mike