Really is a sad situation we living in, I never pay those car guards who suddenly appear out of nowhere to try teach you how to reverse out of a parking lot.

Always park close up as possible to doors of shop (new thing in our area is to attack people parking further down near exit), alter parking aisles using different spots. When you find a car guard worthy of being tipped try remember him/her and park using them in future. Getting to know the guard sometimes helps.

There is an art to just going out of late, try have a better day, I hope you feel stronger soon.