Engine Clicking And Tapping Noises problems of the 2019 Subaru Outback

Subaru Outback 2019 is under warranty - purchased 4-6-2019 12/3/2020 car which is in the garage would not start. Battery was dead/drained,indicator light was on. Went back out and tried it again and just clicks would not start. 2. Called service department and they recommended that I call roadside assistance to jump and start the battery got car started, let it run for 40 minutes. They did not check the alternator but we asked them to. Turned the car off after 40 minutes and put the car back in the garage. - 12/4/2020 - morning - car started, went to my destination. Returned home, turned off the car noticed clicking sounds for 5 min which I had never heard before. 12/4/2020. Called car service department: they recommended to bring the car to check the battery etc. Which I did. . Note: between Dec 4 and Dec 13 have been driving the car regularly. Dec. 13, 2020 - Sunday - 2nd time car would not start drove car to grocery store. Came out of store . . Car would not start. Called roadside assist. Jump start my car. After jump start car, I drove car at least 1/2 hr to 45 min and came home, left the car running in the driveway for at least 45 mi . Came home and set up an appoint at service dealership for 11:30 on December 14. Dec. 14, 2020 - Monday -drove home from dealership, continued to drive car for a f about 25 miles. Arrived home - turned the car off for a period of time. When I tried to start car to park it in the garage, car started but the starter motor was very sluggish at the onset. Dec 16, 2020 - tried to start the car which is in the garage and it would not start, totally dead . . No lights. Send attached letter to manager of service. No response yet.