Really don't wanna be a jerk here but have to ask you this - when you attmepted to cashout your bet at 30-40 - what was the amount of cashout that was shown on the screen?

Did you agree at that very moment to "receive" this amount when the score was 30-40 i.e. did you click on the cashout button back then at that very short millisecond?

Please ask yourself if you were 'in agreement' with the numbers that were presented to you on the screen back then? Yes, many bookmakers accept/reject bets in their own favor - but they did not initiate the click for you, correct?

Again, not being against you, just trying to shed some light on this....