Honestly, for better or worse that kind of makes your opinion of him irrelevant for the purposes of discussing his business style. How someone treats their close friends isn't necessarily indicative of how they treat strangers or customers.
I tried to place an order with him a while back, and after several email exchanges I clearly got the impression that he'd much prefer I just buy a ready-made knife of his from a reseller, rather than custom ordering one. Which is fine - a lot of makers are moving to the model where they don't take individual orders, but sell ready-made knives either individually (e.g., via Instagram) or through dealers.
The OP's story seems to be a different issue, but I still wouldn't recommend AdH to someone for ordering a custom knife. Ready-made from a dealer, sure, that's fine.
Off-topic side note: is it just me or do a lot of South African makers seem to make very similar knives. I know van Heerden learned knifemaking from Thorburn; did others like Blomerus learn from him, too?
Here are some similar frontflipper SA knives, Burger, Skellern, Bester Ratel, Van Wyk, Sacha Thiel Civillian (who is french actually).