Failure to pay casual labour

My kids worked at the new Astron Engergy in Oaklands Johannesburg with your promotions partner - Innovate Insight Promotions - on the 23rd of July. My daughter has only been paid for the work this week and my son is still waiting. This is exploitation - kids are desperate to work so they will take on anything and then are scared to complain in case they won'y be used again. I understand that this is a contractor or 3rd party, but your brand is associated with Innovate Insight Promotions.