However, they should have given me a bonus of at least 20 dollars on a 600 dollar bet.
I'm not sure how can you get the $20 because you wager $600 only, if your calculation is real then I'll be very happy.
I'm platinum 3 in Stake and my average weekly wager amount is around $20k-$30k.
If I use your calculation, should I ask them to give me $500 for weekly bonus? LOL
Just FYI, my weekly bonus is around $45-$55 with $20-30k wagered.
I think you are expecting too much from the weekly bonus.