HHGREGG False advertising, Bait and switch, unprofessional, Snake oil salesmen Fredericksburg, Virginia

I received an advertisement in the mail for a pre-black friday sale at Hhgregg. The advertisement states "Panasonic 50" Class Plasma HDTV SRP799.99 now 599.99". I went into the store on 11/19/10 and had Ashley Sprague salesperson helped me. I showed her the ad. She showed me the T.V. The current price was 799.99. She stated that was because the sale did not start until Nov 21-Nov 27. She then stated that they had a 30 day price match guarantee and that I could purchase the TV today and come back during the sale dates on the advertisement, show them my receipt and the advertisement, and then I would get the 200$ price difference right away. I went back on Nov 22 and showed customer service my receipt and ad. They said that they could not give me the discount because I purchased a different model than what was on sale. I asked to speak to a manager and he said there was nothing I could do but I could return it. I am a single mom and have no one to help me to return the item. He said they would not come get it and that I would have to return it somehow. He even laughingly said they could take it out of the salespersons paycheck since she was the one that made the mistake. I was so upset I did not get his name. He was a white male with red hair and red beard. I looked at the advertisement and there is no where on it that specifies what model of tv. There are also no exclusions or small print that states which model. I have the advertisement and my receipt. I was on a specific budget and was promised the sales price on this tv. I want the sales discount of 200$.