actually, it does.
akin to renting a movie and dropping it off at mcdonalds.
it pisses off employees and gives ERAC the upper hand to charge your CC
if you had taken it to the rental location, they would have informed you of the charge. at that point you could have argued your case for non-payment, and chances are you would have won, saving yourself all this hassle
next time you rent a car, i suggest returning to the erac location, regardless of what they tell you.