(51)If repair or replacement have not provided the consumer with a proper remedy for the lack of conformity, the consumer should be entitled to a price reduction or to terminate the contract. That should be the case, in particular, where the seller has not completed repair or replacement, or where it is clear from the circumstances that the seller will not complete repair or replacement, or the seller has refused to bring the goods into conformity because repair and replacement are impossible or would impose disproportionate costs on the seller.