Paid less than i should have been paid

I was in sibaya casino at around 4pm on the texas holdem table. I was playing with R75 on the trips and R50 on the ante and bet

I called two times. So i had 100 at the back on the call.

I made a straight flush. The dealer qualified with a flush to king.

I was paid out R6500. However if you work it out. I was suppose to be paid (40x75) + (50x100) = 8000.

Since the dealer qualified i was entitled to winnings on the ante as well? Can you confirm how much i was suppose to be paid ? As i'm sure i should have been paid much more as its the second highest ranked hand in poker ?

I was paid out R6500 only.

Can you please look into this matter for me as i am very unhappy with this. I told her to call the floor manager to confirm my payout. I take it m good faith that the dealers payout sincerely. Please assist and resolve this matter.