Terrible service from green motion

They charged me an extra £72 to get the vehicle and after a long flight from Florida I accepted this... they showed me round the outside of the vehicle but not inside ... When I returned the vehicle there was a chip inside they said the seatbelt had hit it !!!! My daughter never even sat at that side in the back as she always sits behind me driving..... they charged me £232 !!!!! If I could attach a photo I would ...... they are conmen and it was daylight robbery... the man at the desk was rude to the point my daughter got upset, I had to pay as had a flight to catch.... will never ever use this company again .... absolutely disgusting!!!!! And I hire cars all the time