<s>[INST] The services of the company Singh Brothers' have been subscribed by several banks, Mutual Funds and financial institutions. One of their customers Mr. Suraj Mehra, for the last two years, has been subscribing to their entire issue of bonds. Mr. Mehra has now applied for a loan from Singh Brothers'. While evaluating the loan proposal of Mr. Mehra, it is discovered that Mr. Mehra has been subscribing to their issues, not out of his own interest, but in the form of a quasi trustee for a third party Mrs. Rukmini Rai, who could not participate in the loan due to the constraint of the company to lend money to the people of certain professions through their constitution. This revelation passed unnoticed because of the arrogant attitude of Mr. Mehra.
What is the actionable wrong committed by Singh Brothers' in this transaction?[/INST]