Interesting post. From your post and the quotes, which I am not sure how to bring here, you say "All this sounds reasonable and proper." Does it? The only thing that sounds "reasonable" is keeping the driveway open, but nobody had called an ambulance.
This ambulance business is very confusing. When someone is hurt, even fatally injured, the first person to know calls an ambulance, usually. Or, if they are dealing directly with the emergency, they say to someone (Stander?): "Get help. Call an ambulance." Here we have at least three people that apparently didn't call.
Did anyone actually call and request an ambulance until Dr. Stipp did? There must be records. It seems an ambulance did arrive shortly after Dr. Stipp called. Was this because of his call?
At this point, I am not counting OP's call lasting 66 seconds, during which he was apparently told to "carry" a "mortally wounded" person in his car. I'd love to get to the bottom of that call. Would an emergency operator ever say something like that?
If someone at Netcare really did say that, it explains a lot about OP's behaviour. If they didn't, it changes a lot (for me at least). Are these calls recorded like the 911 calls in the US?
One explanation is that the Standers thought that OP had called an ambulance. I think all OP was concerned about was himself.
It would certainly help to understand all this if we hear testimony from one of the Standers and more information about the call to Netcare. Without this we can only guess.