When I bought the number card, I temporarily used someone else's agent because I didn't have an ID card. I want to change my identity information now, but I can't contact that person. What should I do

When I bought the number card, I temporarily used someone else's agent because I didn't have an ID card. I want to change my identity information now, but I can't contact that person. What should I do? The transfer shall be handled in their respective business halls with the valid certificates of both parties. In case of transfer between unit users, a written application with valid official seals of both parties and a valid proof of the identity of the agent shall be handled. Your situation is very special. In this special case, if transfer is needed, some cities can entrust the original valid certificate and provide the invoices for the last six consecutive months to the business hall for transfer. However, the transfer policies of different cities are not consistent, depending on local conditions. It is suggested that you can consult Unicom customer service or go to the business hall to find out.