Young Adult Benefit - no feedback after 4 months

Discovery Insure offers a Young Adult Benefit which rewards young drivers for good driving and educating themselves on good driving. I have followed the published rules very closely and reconciled the benefit payable to my daughter over her first 6 month cycle. Neither my broker (Peter van Beek - top Discovery advisor) nor Discovery Insure can confirm how they have calculated the benefit they say is payable - which has moved from R600+ to R1200+ to R1800+ as this query has aged. My calculations put the amount at R2600 but nobody seems to have any idea how the Discovery system works! This has been on persistent query since February 2015 - including a one on one meeting with Peter van Beek. No closer to clarity. Discovery Insure is unable - or unwilling - to prove that they are living up to their widely publicised promises.