Casino Beacon reported that Dale cost the firm a five figure sum, with William Hill spokesman Rupert Adams saying: "We now dread the weekly eviction as we are losing money every week, punters are filling their boots."
Referring to the latest result, he added: "Very disappointing, but sadly it is no great surprise."
Dale was being backed in to 1/100 just before the eviction show on Friday, with bets of up to £20,000 being accepted.
Mikey is the current favourite to win with odds of 7/4, followed by Kat at 7/2. Nicole is the outsider at 66/1.