Horrible customer service

Terrible experience at picking up the car here. Just because I didn’t want to purchase their own insurance (because I had an insurance with a third company), they treated me in very rude manner. The guy seemed offended and started telling me that I was the only one doing such a thing and when I ask you to give me a piece of paper where he wrote all the conditions of the deposit I was paying he throw it to the bin in such a theatrical way saying that that paper was his (he should have studied drama instead of being a mediocre rental car assistance). Then he made me sign the contract when it said that the card did not have any scratches when I have not had seen the car and I politely asked to see the car first. He shouted at me saying that that was normal procedure. When I arrive to the car there were scratches so I had to make them come to the car and amend the contract by hand.