Europcar gives unprofessional,unfriendly and unhelpful service!

I used Europcar through my insurance for the first and definitely last time. They are unprofessional,unfriendly and not helpful. I left house keys in the rental car. Not mine. My client who I assist with petsitting. I KNOW that I havent removed it from the car. When I contacted Europcar in a emotional stressed state of mind the only response I got was in a unfriendly dont care its your problem manner. They didnt even offer to phone the new client who booked the vehivle to arrange that I get the keys from them. That is the response I got from the so call manager Kevin. When i phoned again numerous times , they didnt even answer their phones,didnt even phone me back. This so call business has NO professionalism. NO CLUE on good custoumer service. You MUST know that I reported this bad unprofessionsl service to my insurance. I am going to make sure that top management of my insurance knows about my complaint. They will hopefully cancel their agreement with Europcar and use ANOTHER profesdional rental compxny. Europcar should NOT get the opportunity sgain to give this bad service to their custoumers.