Shoplifting

I'm in a payless shoe store in the mall looking for shoes for my daughter. I happen to see that they have dance shoes (jazz ). They are $22.00. I notice that there is a pair that has obviously been worn. They are dirty inside and have been stretched the way leather stretches when worn. One thing I should mention, the store itself is ghetto and located in the ghetto as well. Therfore, the shoe area was completely in disarray and the shoes were mismatched with many not having matches at all.
I am a bargain hunter and a firm believer of "let's make a deal". So...I take the used pair of shoes to the counter and ask the associate if they (her or payless) will be marking down or discounting the shoes. I made full mention and brought her aware to the fact that the shoes had been worn. They were $22.00 and I was going to offer her $10.00. She examined the shoes for about 10 seconds and set them aside. She then headed back to the dance shoe area and brought back a new pair of shoes. I looked at the box and pointed out to the clerk that the shoes were two different sizes. I said nevermind and left. [I then proceeded to go next door and buy a pair from JCPenny's]
As we (my children and I) are leaving Penny's we walk back toward Payless. I am still a little bitter that the woman would not make me a deal and contimplated going back 1 more time to explain myself. This is where it get's good.
The cashier and I make eye contact as she hollars to me to "bring back the shoes". I say "what?" and she repeats it. I walk over to her and she tells me that she has a witness who saw me take the shoes and that I was caught on tape. I of course whirl in to a pissed frenzy and demand that she show me the tape. With a smile on her face she shook her head no, and refused. I told her I demanded to have her name and that of her superviser, she again smiled and denied my request. She told me that I was to wait there for the security officer to come get me until the cops could come to arrest me. After about 10 min. of waiting the security officer told me to leave the store, that I was unwelcome and to never return. I got pissed and demanded that they call the cops. They did. The cops took the cashiers version of the story and never so much as asked me my name. The officer forced me to give the cashier my PERSONAL info such as address and date of birth. The United States...Guilty until proven otherwise.
I am now banned from all Payless shoe stores and have been embarassed and falsely accused of stealing in front of my kids. I was trying to stand up for myself and prove a point and in the end I only looked like a jackass-loser. I feel like a victim and judging from what happened I am supposed to brush it off like "no harm no foul". But I can't accept that. How should I feel? What should I do? Any thoughts?...