Sue walmart for discrimination?

[Fda Fdfa]

Well I was in walmart on black friday and I saw this tv and it was listed for $700. Well I waited 2hours in line and when I got up to the front the guy told me it was $1350. He called this guy over and this lady and he said to me ( I am Indian he and she were both Caucasian) "Even if that was the price I wont sell it to you for that" the lady that backed him up was the store manager. If I wanted to get another T.V. I had to go all the way to the back of the line to get it. I feel that was wrong. The guy said it with a a very rude tone. Do you think this is bad enough to make a case. Also I have 3 witnesses that are caucasian too so they cant say "my own people are backing me up".Yes you can tell it was racism by the tone I have 3 witnesses I know personally. The way it was said is very wrong. You had to be there to see the way it was said. I don't pull the race card for everything but I called the district manager and was saying he was sorry. It was very wrong the way it was said. Also when I was questioning them about the price of the tv they pulled it away and took it back like they though I couldn't afford it. Thanks