Easyrentcars was easy to use but green motion were terrible

on returning the car four staff members took 40 minutes discussing between themselves an apparent new scratch mark on one of the doors. Never in this period of time did anyone inform me what was going on until I prompted them that I had a flight to catch. they showed me a picture from their laptop of what the door supposedly looked like without the scratch before I rented the car. Only after I pointed out that the date of the picture taken was after the date I rented the car, and therefore could not have been a picture of the car I rented, did they agree to sign my car off as no damage found. I don't know whether this was a failed scam attempt or a genuine mistake but either way it was terrible customer service.