Owners/service Manual problems of the 2020 Nissan Altima

I took possession of my car on 1/21/2020. The first time I used the navigation, on 2/3/2020 I missed a dentist's appointment I was going to for the first time. I entered the town then the building number and street name. The directions sent me in a completely opposite directions. On 2/25/2020 I was driving on the highway when an alert appeared on the board. It did not clarify the problem, it advised to refer to the manual. I took the car to the closest Nissan dealership, martin Nissan. The service manager, guy DE leo, entered his own address, choosing the town first, and he got wrong directions as well. I contacted Nissan, and the matter was passed to the escalation department. A man by the name of james, direct telephone number 615-725-7737, called me. I explained the two problems. He stated that he would review the matter and that Nissan might replace the 2020 Altima 2. 5 sl. He called me today, 2/28/2020 and told me that he spoke to guy DE leo at martin Nissan, who told him that the navigation had not malfunctioned, although he saw it do so himself. As for the alert that appeared on the dashboard, he told james that he had scanned a page of the manual referring to the alert. James, just a Nissan representative, decided that since no repairs were needed the car would not be replaced. I have no other car, and I am very fearful while driving, not knowing what else will malfunction.