Their database system seems pretty poorly designed. I've had a couple of problems in the past with them dropping my corporate code and then messing up my email. Took many calls & emails over 2 months to resolve the first one and about 3 weeks for the second. Each time they say it's done, the next time I rent shows it's not. This includes time spent at a rental counter where the agent "fixed it" and gave me a print out to the effect.

If you do care about getting First, just keep trying.