Poor service delivery

We purchased a new vehicle and paid for smash and grab tint to be fitted. The first time it was done, it had air bubbles and looked bad. We sent it back. It came back with more air bubbles and even the barcode of the tint was visible. The back glass was not completed which we raised with Kenneth. We have since requested for a full refund of the tint so that we can get it done properly elsewhere at a provider of our choice. Both the sales manager Kenneth and the dealer principle Jacque have ignored the emails. We now have a brand new vehicle with a sub standard tint job. Nobody seems bothered by this at Hyundai.