Hi all, I searched the forums for a while but didn't see this question brought up.

I am midway though my first rental with Hertz, and when I initiated the rental I did not have a Hertz Gold membership, nor did I know my company's CDP. The rep (who was clearly new) told me not to worry, I can add those at any time during the rental.

Later, I signed up for Hertz Gold and found the CDP. When I tried to add them to my reservation, the Hertz Gold number was added no problem but they said I cannot add the CDP after the rental has started. I've called the worldwide reservations 1-800 # (at the suggestion of the service rep) but haven't received a return call as they promised.

Have any of you had experience with this issue, and what advice do you have for getting the CDP added? I plan to rent this vehicle non-stop for another 5 months. It's been one month so far and the bill is currently ~$4200 when it should be ~$1800 with the CDP added (this is a direct comparison to a coworker who rented the same car for the same duration, but applied the CDP at the start).

Thanks in advance all!