The process is a bit more complicated than in companies that are fully online. You will have to go in person to the nearest agent, send an email to the NYCM, or call its support at 800-234-6926. You need to sign a Lost Policy Release (LPR) paper to complete the cancelation. Having to deal with customer support may seem a bit old-school and redundant, but the company has excellent ratings when customer care is concerned, and it should probably run smoothly.