Searching for scratches/damages

Normally, I am not writing reviews. HOWEVER for this company I will do it to ensure that people would not rent a car from this firm. We went to South-Africa to rent a car from Johannesburg to Durban and afterwards from Port Elisabeth to Cape Town. When we had to deliver the car back at both airports, the people from the bluu company did their very best to search for the smallest scratches/damages on the car. They blaimed us for damaging the car, even we were sure that it was not our fault. Even if this firm looks attractive due to the lower price of car renting, in the end, the money you have to pay is even higher than at the regular firms. So my recommendation: do not hire a car at bluu!!