If you get a platinum card with an annual fee of 2,800 presented by the salesman of Ping An Bank, you can take the following steps: contact the customer service of Ping An Bank at the first time, explain your situation, and then request to return the card. If the customer service can't solve the problem, you can lodge a complaint and ask a higher-level manager to intervene and seek a better solution. At the same time, it is recommended to leave evidence, including cards, tariff bills and related supporting materials, to ensure that you have enough evidence to safeguard your rights and interests. If the above methods can't solve the problem, you can seek the help of regulatory agencies or other authoritative organizations through relevant complaint channels to safeguard your own rights and interests.