The sisters chose the Brain Foundation as their charity of choice this season, following their mother's battle with a rare neurological disease.
Taking aim at the show's producers, the pair describe their experiences as "gut-wrenching, soul-destroying" and the "lowest thing", noting the edit they've received since the series went to air is the "lowest thing" that could have been done to them as "women, daughters and carers."
Following on from their open letter, The Veronicas took to Twitter to allege the show had "gaslit" them, considering the
Following the letter they also fired off several angry tweets claiming they were “gaslit”.
Their statement read: "The fact they have edited this to seem like emotional manipulation and blackmailing people for sympathy is awful. Being gaslit on an edit over something so close to our hearts is truly beyond comprehension. We are grateful there was money made for all the charities involved."
Channel Nine is yet to respond to the claims, but fellow contestants have spoken out in response.
“Deepest sympathy and compassion for @theveronicasmusic who were fighting for their Mama Bear and wearing their heart on their sleeves,” designer Camilla Franks wrote.