You need your receipt, it's all about the date of purchase.
How old is it? What kind of warranty does it have? What date is on it? Was it a new battery or one of their "refurbished" ones? You said you took it in four times. What are they saying? Corporate is a good place to start if you are not satisfied. Their batteries new are warranted for two years and prorated yearly to 5 years. I know nothing on the refurbished ones except my friend buys them every time and has great luck with the life of this battery.
If all the batteries that you brought from there have been good, go there. If what to switch up, go the other place. Sorry it took so long to answer. Combing daughter's hair.
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