Bonang Matheba Shows Her Mother Some Love As She Leaves Her Executive Sasol Job. Her mother Mama Charlotte, is a force in the corporate world. For the past couple of years,she has been doing amazing as the Executive Vice President of Human Resources & Corporate Affairs at Sasol. “Today marks my last day at Sasol as the Executive Vice President of Human Resources & Corporate Affairs. As Mama Charlotte was getting her flowers, Bonang joined in the comments section with a heart emoji.