well the sales clerks may have been frightened and thought they were justified called police , but going into a store open to the public and not buying anything is not a crime. neither is being in your car in a parking lot that is open to the public.the fact that someone is scared doesn't make
anything you did wrong.As far as the police searching your car they were only able to do that because you gave them permission.I don't think they had anything to convince a judge they needed a search warrant .but if they could have found anything in their free search they would have used it against you( what if someone dropped a perscription pill outta their pocket
by accident?)remember you have rights that protect you from ramdom searches. you also have the right to not answer any questions without an attorney present.If you would have said anything they could have twisted
to be able to file a charge the possibility exists.I had an attorney tell me to NEVER consent to a search of anything. they think they have cause let them get a warrant. most times if you don't consent they will just say ok. But why give them a free fishing trip . And who said you was banned from the store?
was it an employee, a store manager or just the police so they didn't get another call. without knowing where that statement came from its hard to know if it has any official status. sorry for your bad experience!!