How to return my ZTE Grand X Max 2 for a refund?

I bought a ZTE Grand Max 2 a few  months ago and it won't turn on at all. It's in perfect shape. I was forced to go back to cricket and buy another ZTE Grand Max 2. How do I return the first one to you for a refund? I need the money back right away. 

Hi James. Please directly contact Cricket if you want a refund for your phone. Do it ASAP.

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