A hospital threatened to take a seven-year-old with cancer off life support after an IT glitch at NatWest meant money urgently raised for her had not gone through.
Olivia Downie, from Aberdeenshire, was receiving specialist treatment for Neuroblastoma at the Hospital Angeles in Tijuana, Mexico.
According to Linza Corp, founder of the Families Against Neuroblastoma (FAN) charity, £110,000 raised to help pay for Olivia's treatment and fly her back home to Scotland but it didn't process through the account because of the computer glitch.
"The money came in on Friday but I couldn't verify any of it when I tried to look at the bank account," she told The Huffington Post UK.
"I came out of online banking and went to telephone banking to verify it and I couldn't get through, and I couldn't get through to anybody. I went back to online banking and the service had crashed."
"Then it was the close of banking business, the hospital were saying 'there's no money, we're going to pull the plug.'"
Corp said Olivia's family were so distraught her mother Lauren, who is seven months pregnant, thought she would miscarry.
Seven year old cancer victim Olivia, whose treatment a hospital threatened to pull when payments didn't go through after her family were caught up in the Natwest payments fiasco
"I find it unbelievable but I know it's true because I had her parents on the phone. Her parents were so distraught, Olivia's mum who is seven months thought she was going to lose the baby.
"It was one of the scariest moments of my life. We tried everybody, the Mexican embassy, the prime minister was in Mexico and I was speaking to Downing Street to try and get the PM to sort it out."
Despite the "extremely, extremely distressing" incident Corp said RBS staff were on-hand throughout the weekend and very helpful.
"We won't be changing bank. It was bad timing. It was the hospital that should never, ever have threatened the family. It wasn't the bank that did that, it was the hospital."
She added: "We have no idea when Olivia will be back, everything is on standby but Olivia is not physically able to move or to be moved."
Her mother Lauren told the Daily Record: “If we were to lose her here [in Mexico] and then have to fly her body home we would be tortured for ever more. It would be the end of us, believe me, there’s no way we’d be able to live with ourselves.”
Neuroblastoma, a form of cancer, affects around 100 children in the UK every year.