Good day ! My situation is as follows:
I have booked a car for 7 days at SIXT Frankfurt Airport)
Now my flight is canceled and i should book + 2 days
I can not change date
when I choose
Change reservation I again and again start the order process from the beginning
Support Sixt International and Sixt Germany answer: "
In this case you can change the date by pick up. "
Its impossible online change return time / date?
Thanks