Defective Batteries

My Audi TTR is 15 months old. After 12 months and only 4,000 miles, the battery died. Dealer replaced it under warranty. New battery died less than 3 weeks later. Dealer said tests indicated that I was just unlucky with defective batteries and that there was nothing wrong with the car's electrical system. Has anyone else experienced a similar situation?

maybe where u bought the battrieds he scammed u n gavve u used n unwork
but we never had a problem lyk this