I do not agree with your decission to close this complaint as resolved - because it is not.
Sports event was offered - I take a bet - bet was accepted and cashed out - after few days they voided some of the bets (NOT ALL - I suppose that all the bets placed for the same events should be the threated the same).
They are self-contradictory, some bets remained as accepted.
But of course when 20bet makes a mistake, they will do everything to take your money even though they accepted the bets.
What exactly do you want me to explain?