Ecali48

After purchasing my new 2020 GMC 20 days the truck dash lit up with all kinds of codes and errors the light dimmed and the battery was dead, took in the dealership they said the battery was good just needed to be charged They didn’t replace the battery? Sounded fishy but whatever I drove it home no issues until exactly 25days later I go to open up my truck and the battery is completely dead!! Now 2 months later 2nd time in the dealer lets see what they say now!! I’m losing my cool because I had to call off work the first time now I was late to work the 2nd time. I bought a new truck for reliability but so far that’s not the case