AVOID AVIS LIKE THE PEST

I am a registered touir guide. Some time ago I sprained my ankle and could not drive my tourists around anymore. Whatever company I was hiring from, was willing to change the designated driver in 3 minutes and an emailed HQ photo of the new driver's professional licence. Now I had another medical emergency, during the 4 days Kruger Safari. I wanted my son, another professional driver, (with the same names) to take over from me, but after 28 Minutes of expensive cell phone calls, AVIS WAS NOT ABLE TO HELP ME! AVOID THEM LIKE THE PEST! There are friendly intelligent hire companies around! How many accidents did they have in the Kruger Park involving professional drivers??