Worthridge Auctions and Retail Failed to provide all auction items as agreed to at purchase, doesn't return calls or emails Greensboro North Carolina

 25 May 2016 I won auction lot from Worthridge Auctions and Retail, I paid for the item on 1 June. The lot was to be accompanied by a James Spence Authentication (JSA) Letter of Authenticity (LOA). After several weeks of having not received my order I called Worthridge and was told they forgot to send it, received an apology, and the item was mailed. In the package a handwritten note stated that Worthridge would send the LOA at a later date. After a period of time I began to call to ask when I would receive the LOA and was told soon. 22 July 2016 I sent an email asking for an update – no response to my email or phone messages. 25 July 2016 I called Worthridge and was told I would receive the JSA LOA by 5 August 2016. I requested and received an email verifying this in writing. On 8 August 2016 I emailed Worthridge, no response. I have called Worthridge every day from 9-12 August and have left multiple voicemails during their posted hours of business. I have made extensive efforts to resolve this issue with Worthridge, however they have not met their own suspense and are no longer responding to my emails or phone calls. As of 16 August 2016 I have still have not received the item, no return phone call or email response.