6. Robert has been working with Trey, a client, whose main objective is reducing risk in his investment portfolio. Robert informs Trey that in order to accomplish that goal, he first needs Trey to provide him with a copy of his most recent investment statement. Months go by, yet Trey has failed to give Robert a copy of the investment statement. Trey then pressures Robert for a suitable recommendation based on what he has told Robert about the portfolio. Of the following options, which action should Robert take?