Kulula inconveniences us and tells us we are pulling the race card

We booked a return flight for our family (with Young children) with prepaid seats in the front for ours and other passengers convinience as we travel with children. Our flight was canceled and we were moved from Kulula to BA without notification none whatsoever. We realized last night when we saw an email with a strange booking ref number, we had to figure ourselves out. We were allocated seats in row 16 when we prepaid for row 5. A huge inconvenience, to make matters worse, we are booked to fly an hour early which throws us off completely. We called the call center at Kulula and spoke to Kenaan who was not helpful and told us that we are pulling the race card. This is the second incident with Kulula where the matter has a racial undertone. All we want is to be in the same position we were in, even if it's a different flight. The seating arrangement is crucial when traveling with small children as a family of 4 and there's a reason why we prepaid seats the way we did. We don't want to comprise our seating, we will take any seats in the front for as long as they are in the same row how we initially booked and paid for them. The decision to change our flights was a huge inconvenience and now it seems we will miss our flight which also has a ripple effect on our scheduled activities for the following day. I ask that someone sorts this out immediately, I have already spent R80 on call with Kenaan, my airtime ran out and he hasn't called in over 30 mins. The flight takes off at 12:50, we need to be at the airport 2hrs before, it causes major delays!!!