Purchased a phone via eBay (it was listed as BEST ...

Purchased a phone via eBay (it was listed as BEST DEAL, not Diamond Wireless). Was supposed to be an unlocked SS Note 4, but it was locked. T-mobile said it was useless. Have tried emailing, calling. Only get an answering machine. Looked up this place on google and it shows an automotive garage. Seriously? What a giant scam this company is. DO NOT BUY FROM THEM.