Let's see if this summarize your case correctly: you feel like you're being cheated because your daily bonus is lower than your expectation. You're sure you've wagered a lot, which means you should be compensated with significantly bigger daily bonus. You asked the customer service and they've explained to you that there are multiple factor that are counted towards daily bonus, there is no single exact formula, as it depends on your loss, the house edge of the game you play, and other factors.
You insist that their calculation must be wrong, meanwhile, they insist that there is nothing wrong. And things goes in circle around this topic.
The problem i have with this, is that first of all they gave some weird explanation wich were just lies, like the part where they said that my daily could be lower because sometimes they transfer that to weekly and monthly, wich is absolutely ridiculous ofcourse.
On top of that they were very very vague about all of this.
And when i finally got all the info it still doesnt add up, they gave 4.25% of house edge on wagering without any other factor they were talking about, when you state that you reward up to 50% and then just give out 4.25 thats very misleading in my eyes. And the best part, only get 20% of the amount lol, so for 28000 wagered i got 8 dollar, and the other is stuck to be claimed in a timespan of 2 weeks.