Hi everybody. I'm from Belgium and rented a car for the first time in the States.

On Wednesday I returned the rental to Hertz Austin airport, before I flew home to Belgium. The employee of Hertz told me to just leave the keys in the vehicle and wished me a pleasant flight.

This morning I noticed that Hertz keeps charging my credit card every day. I tried to call the customer assistance however they are closed Sa-Su.

After doing some research I noticed that I needed to fill out a Express Return slip which I didn't do. What can I do now? Any suggestions would be greatly appreciated!