Unfortunately, I am away from home, so I cannot give you the exact number I called, but I am pretty sure that I used the new number displayed on AA website and not the one on Mindpearl website. Furthermore, and this might actually explain the situation, now that you mention it, none of the agents I talked to ever mentioned Mindpearl, they always identified themselves as the local AA representatives. I only assumed they were working for Mindpearl because of what I read on FT.

This being said, I completed my DONE4 booking this morning with BA in JNB and I must say that they have been very helpful. The only issue I had was the delay to get an updated price whenever I changed part of the itinerary (typically 2 days) during the preparation phase. But at some point, a SA BA agent took charge of my booking and he called me at different places where I was travelling every time he got new information and was also in touch by email, so that I did not have to start all over again with a new agent every time.