According to a study supported by Martin Lewis, the government earned £2.4 billion by selling investment companies debts from bankruptcy lenders.
A total of 200,000 mortgages were sold to companies that are unable to give fresh deals.
Since other lenders won't take them, many homeowners are trapped paying high rates.
The creator of the MoneySavingExpert website is appealing to the government to free so-called "mortgage prisoners".
Mortgage prisoners sue because of unfair rates.
Since the financial catastrophe of 2008, Samantha has been unable to pay off her debt.
She informed the BBC that starting next month, her payment, which was $546 per month last year, will increase to £952.
"This study makes it crystal clear that the state sold these borrowers into poverty knowing that it could hurt them," said Mr. Lewis.
"And made billions doing it," He added.
"People have been left in financial, physical and mental misery, exacerbated by the pandemic and cost of living crisis ripping through their already dire situations."