Pathetic after sales care

My husband purchased a Land Rover Discovery Sport 2016, from John Vagionakis at the Rustenburg branch on December 4th, 2020, where my husband was advised that the navigation card was ******, but that he would order a new card from the UK, free of charge. On the day of the sale, John went out of his way to get the vehicle ready for collection. This experience however changed from good to bad. My husband has had to follow up on the navigation card, numerous times for the past four months. On the second last call to John, John was surprised to learn, that "his people, never contacted my husband to inform him, that the navigation card was no longer compatible with the vehicle". We refused to accept this, and contacted two different Land Rover branches, where they were supp**** with the VIN number of the vehicle, and we were advised that the navigation card WOULD word. My husband confronted John with this information, where John advised my husband that he would get back to him, once again, John has failed to do so. Pathetic doesn't even start to describe the level of service.