harrassment @ walmart do i have a case??

Lastnite 6-24-2013...me and my daughter went to walmart we were shopping and we had separated a little later...well she had bumped into a secret shopper that she has heard is around the store and her and the secret shopper gt in to a argument..all of sudden while I'm in line I see my daughter who is 17 coming fast towards me saying something and the lady behind her like charging at her I stopped the secret shopper and all I hear out of her mouth is " you four eyed little b*tch...f*ck u b*tch..you f*cking little b*tch..and I respond as excuse me why are you screaming at my daughter on your job... she is 17 yrs old and you an adult working at your job what the hell!? by the way my daughter was not stealing! We have money...thats not the point regardless ..it was strange because when my daughter was upset and felt harrassed she asked 3 workers to call the manger and everyone just looked at her and did nothing talk about feeling alone and nobody wanted to help.. little later a security guy came up and escorted us out of the building while the secret shopping laughed and flipped us off...Wow I could believe that walmart what has the world come too!?!?