refusal to unclamp disabled driver's vehicle

I went shopping @18:20. Always park on disabled spot. When i returned, my wheel was clamped. Despite my sticker being displayed, i had to wait till almost 19:45 to get my wheel unclamped. The on-duty manager saw me park &decided i am abusing the permit i have had for almost 5 years. He did not confront me, he waited till i was gone to clamp my wheel. I had to fight with 3supervisors& then they phoned him. Never have i been more embarressed, offended and humiliated. I park there whenever i shop @spar. He had the ordasity not only run away, but he had to make me put up a fight to get my car. In the dark, female alone, stuck as he felt i am not cripple. I would like him to contact the Assocciation for the physically challenged to confirm the validity of my sticker. You cannot just go buy those stickers or **** a condition. Not everyone with a lost arm or leg is disabled. I have a severe pelvic, spinal, muscular and leg problem from a head on mva i had 4years ago. I was born normal & the accident left me physically disabled. Ever try get out of a normal parking bay with a severe hip problem? Well, unless i have the added space of disabled bays, i am stuck inside my car. I try to fit in