I've rented about 20 times from the Hertz SD AP in the last year.
The last ~10 did not have airline miles posted when I requested them. Later when I ask Hertz to credit me for them they did so fair enough but it did take extra time.
The part that really bugs me is that I put never lost as a preference in my profile thinking that, based on my 5 Star Status, they might see I like it and give it to me as part of a free upgrade every now and then.
But what happened is Hertz San Diego Airport (and only Hertz San Diego Airport) overrode my direct reservation and cost to add neverlost. This increased the price and over charged me. Then they make it a very large hassle later to change it back or get credit when I didn't spot it until returning.
There are still a few I over paid for that I didn't notice until after returning the car.
This is not fair. They don't override for other items such as car class and make you pay more base on your preference, but they do for neverlost.
The San Diego AP office is very bad in my opinion.