Hello mate, on the same boat as you. i got the following from DJM on the 12th of June.
"Your application is currently undergoing
background/security checks, hence the delay. Once
these are complete we will be in touch. "
All of my enquiries were also always answered by DRD so I was a bit surprised myself when I received a reply from DJM. At least you're lucky that they told you where your file was at. I wasn't so lucky and have to wait for my CSIS notes, which hopefully I should receive in the next couple of days.