Paid the price in advance via internet with full insurance.
When picking up car, airport agent says “this type car not available, we have to re-make contract”
Price difference was couple euros between those 2 contracts and agent says “we will refund internet payment, this is only what you pay”
When you get the mastercard/visa bill, there are douple price and firstname.lastname@example.org says “The 153€ you paid with Goldcar was for the extras added on at the office”
Just escalated this hoax to Mastercard/Visa authority. Lucky that I had a witness.
NEVER AGAIN GOLDCAR !