Parking *******

Interpark is clearly out to rip the good people of South Africa off. We spent an hour at a restaurant across the road from the illovo parking junction in johannesburg and got charged a ridiculous R20. When we asked the attendant why... she pointed to a small hidden sign in the dark that read R20 flat fee after 18:30. Firstly, how poorly sign posted and secondly where do you get off charging such escalated prices?? FOR ONE HOUR. Its a blatant consumer *******.Its companies like this that bring South Africa down.