Car wouldn't start within first week of owning. Dealer contacted, battery tested, dead cell noted by tester. Battery replaced. Has happened 2 more times, required jump start. Dealer says battery may die if car not operated daily. I have read there could be a badly designed hatch electrical component. What can be done?

This was the first time. Ascent is so unreliable I will not take it out of town. It is at the Subaru dealer now. A $47,100 mistake I will only make once.