Mott calculated my tax return incorrectly by declaring I owed far more than I did. He then sent the return to the IRS without my knowledge or permission, which IRS itself considers Misconduct.
It forced me to have to file an Amended (Revised) Return with another firm at additional preparation cost (which found Mott had over-estimated my tax due by almost $700), and involved the tremendous aggravation of correspondence back and forth with the IRS for almost two years.
Mott then lied and said I hadn't paid him by a valid check when he received all payment in full for his services. He hid the check I sent him and took me to court for "non-payment" as a vindictive act.