It was some time ago (20 yrs.?) but we rented from Hertz SXM and when we arrived they had no cars. We ended up renting from someone else (of course @ a higher price) so when we got home I contacted Hertz USA and explained what had happened. They explained that Hertz SXM was not directly affiliated with them but were allowed to use the name. I responded that the name was "everything" and they paid me the cost difference. I hope you have some luck with Hertz USA.