Hi Emile,
I'm totally distraught to hear this!
Really sorry you guys had to go through that, especially after you've been so careful and so aware of the security issues. I totally understand that it puts you off the Berg.
Where exactly were you camping? Was it along the the river that starts at Ifidi Pass and eventually joins the Khubedu? I know that there are kraals where these smaller valleys join the main valley. If you could post a GPS co-ordinate it would be very helpful and I'll update some of the info on this site.
The shepherds in that area have become experts and are very aware of where stuff is stored in tents and how to get it out quickly and quietly. The Easter weekend is a weekend that they capitalise on every time. And the weather doesn't stop them - even in snow!
They must have spotted you during the day after the first night whilst shepherding, as it's unlikely that they would routinely be prowling around in that area at night as they do along the Tugela. It's a pity you had to stop, as it might not have happened if you had moved on (not that there was anything wrong with the decision to let the group recover and get dry).
You did the right thing by posting guard duty! It's a total drag doing it, I know (done it several times).
I'm saddened that it's becoming so bad, and that even after taking all precautions one is still not immune. The Khubedu valley area is seriously bad and it's spilling over into Ifidi and Icidi.
I hope that you can find it within yourself not to give up on the Berg!