“You get scones and tea when you call to my house,” says Assumpta Mangan, a 60-year-old community employment supervisor of “ordinary country” stock from rural Cork. AIB representatives certainly got the full hospitality treatment when they came to her home almost 20 years ago with the promise of a sure investment option. “We trust people, we were very trusting, and so we invested money,” she says.  In return, Mangan saw a large chunk of her life savings evaporate into thin air. “In about 2008 we got a statement saying your investment is worth €0.00,” she says. And she was not…