Online bookmaker Sportsbet have refunded head to head bets on Canberra Raiders to win the NRL Grand Final after a refereeing mistake cost them the game.

Sportsbet were quick to notify punters that their head to head bets on the Raiders will be refunded in bonus bets after a call from a referee for six more tackles was reversed which the bookmaker ultimately thought cost Canberra the game.

JUSTICE REFUND: If you placed a head-to-head bet on the Raiders, we will be refunding your stake in bonus bets. Standby, it'll take a few minutes to process. Cheers for your patience #NRLGF

— Sportsbet.com.au (@sportsbetcomau) October 6, 2019

Sportsbet refunded $1.35m in bets on the match.

JUSTICE REFUND: We've now refunded $1.35 million in bonus bets to customers who backed the Raiders head-to-head in the GF and also outright markets. An absolute heartbreaker 😢 #NRLGF pic.twitter.com/wqKJinghUc

— Sportsbet.com.au (@sportsbetcomau) October 6, 2019