Eddies- Loop street- Awful customer care treatment

I have shopped at Eddies for years and have never been treated badly before- they had given good service. But on this particular incident i had parked my vehicle in their parking and went to Natal Museum- i admit this was wrong- i had even said this to the manager. They clamped my vehicle. He said to me i must pay a fine or shop inside to avoid the fine, this is after calling me a liar and saying I was not going to shop in store- i advised him "who said i wasn't going to shop?". He was very antagonistic thereafter and told me that i must not shop for R20 or R50 as that wont fly here... I obliged and was highly annoyed. I picked out 2 items for around R100 and when i get to the till- the gentleman behind the till begins to antagonize me further and saying i'm not meeting him half way...At this point highly annoyed asked what he meant and he implied that what i had taken was not enough...I advised him they don't value their customers and will be losing me as a customer. He thereafter asked me to pay a fine of R300 to have my vehicle un-clamped. Very dissatisfied with their behavior- even though i obliged and was taking items of clothing...it was not enough. I admitted my mistake but was treated poorly. Terrible customer care experience and will not be visiting that particular store again.