1, you can contact the customer service of the online merchant bank: you can directly contact the customer service department of the online merchant bank to explain the problem and ask for a refund of the deduction. Providing relevant evidence and information is helpful to solve the problem.
2. Submit a complaint or appeal: submit a complaint or appeal to the online merchant bank. Banks will have corresponding complaint channels or complaint departments, which can make complaints or appeals through telephone, mail, internet and other channels, and provide relevant evidence and materials.
3. Seek legal aid: you can consult a lawyer or relevant legal institutions to consult rights and interests and feasible legal channels.