freedompop has been delaying or does not inted to issue my refund Los Angeles California

On July 24, 2014, I purchased a Samsung Victory 4G LTE cellphone from freedom and promptly paid it with my mastercard.  I received the cellphone about a week later and found out that it was not working.  The cellphone was not updated with current android applications and it was also locked to Virgin Mobile.

I had a hard time connecting with a live person (evry now then a dropped call after waiting) but after several days of trying I finally was able to speak to a live person and they transferred me to their technical support.  After about half an hour with their technical support they finally issued me an RMA # (return authorization).

I sent the defective Samsung cellphone based on their instructions and to protect myself did a trace on the tracking number provided with the USPS receipt and verified that they recieved the package.

I tried to follow up by sending e-mails to "Jay" who claims that he is my personal contact for Freedompop support team.  Jay sent me an e-mail last August 11, 2014 that it will take several weeks for my refund to be processed.  I inquired thru e-mail again last week and again I received an e-mail from Jay on August 26, 2014 that my refund will take several weeks again and to wait patiently for my refund.

I can forward all the e-mails that I received and sent to Freedompop as proof and youcan  also see that all my e-mails done in a professional and courteous manner. Please help me get my refund from Freedompop of if this is a scam, please advise on how I can help with exposing these people.