We just finished a one-way (very expensive) one day rental from Budget.

When we returned the car (~8pm), there was no staff but a sign directed us to talk to AVIS staff. Since there were at least three groups of people trying to pick up a car, I did a quick check with the staff and left the key in the drop box (@ Budget's counter per AVIS staff).

Budget ended up charging us two day rental claming we returned the car the very next morning.

The (800) customer service staffs were very unfriendly. They first asked us to prove the time we returned the car. (I wonder exactly HOW ) After we faxed our train tickets, they told us the case was closed because of what's on their record and asked me to talk to the rental location directly.

Anyway...we just contacted the return location and are still waiting for them to correct it.