Complaint / Committee declined to take further action on complaints / purchase of business / Lawyers and Conveyancers Act (Lawyers: Conduct and Client Care) Rules 2008, rule 3 / rule 7 / rule 7.1 / rule 6 / Z v Dental Complaints Assessment Committee [2008] NZSC 55, [2009] 1 NZLR 1 / act competently / following instructions / protecting client’s interests / HELD / insufficient evidence respondent incompetent / failure to follow instructions / Committee’s decision confirmed / section 211(1)(a)