Bet voided without consent - England

In August I placed a bet on Sam Darnold to win Comeback Player of the Year at Bet365. They voided the bet in October citing that Darnold wasn't eligible (based on some tweets about voting criteria). But now Darnold is the favourite to win. Bet365 won't reopen my bet, citing basically that they can void any bet they want even if it's based on bad info. Does anyone else have experience with this?