1. Get a new credit card and fill in the marital status. After the card is activated, the marital status in the credit report will be updated to your status in about 2 weeks.
2. Pull a "detailed" personal credit report to find out which institution submitted the marriage data item.
Then call the agency's customer service to apply for updating the personal credit report information and provide supporting materials.
If the agency does not accept it, it can directly go to the local outlets to file an application for "personal objection".