faulty vehicle

he bought a Renault Duster 1.5dci from this branch in August 2017, we have been having trouble with wet carpets everytime it rains or we drive trough a water puddle., we then went and saw the service manager and he said that we could phone and bring the car in so they can have a look today, we tried to get hold of him 3 times today and he still has not responded to my husbands calls. what are we to do if they dont want to help us?