Legal analysis: when a party complains against a law firm or lawyer, it should prepare a written complaint letter and attach a copy of relevant evidence materials (such as agency contract, fee voucher, etc.). ) complain to the lawyer management department of the local judicial bureau and the lawyers' association (see annex for the address and telephone number of the local judicial bureaus and lawyers' associations) or by letter.
Legal basis: Article 161 of the Civil Law of People's Republic of China (PRC), a civil subject may carry out a civil juristic act through an agent. In accordance with the provisions of the law, the agreement of the parties or the nature of civil legal acts, civil legal acts that should be implemented by themselves shall not be represented.