A tax preparation company whose Facebook page a year ago offered free help to clients who felt they were cheated by  a competitor has been on the receiving end in the last few months. A federal court has been asked to bar John Newlin, owner of Quick Sam Tax Refund of Gary, Ind., from preparing federal tax returns for others after the Internal Revenue Service said it found 96 percent of the returns prepared by the business had deficiences. Four former Quick Same return preparers have already pleaded quilty to tax-related crimes.