예스코 고객센터 및 전화번호 Yesco customer center and phone number
Yesco is a major domestic company that supplies city gas to Seoul and some Gyeonggi-do regions. Their customer center handles gas connection and removal applications, rate inquiries, and gas leak reports. This is a post about how to use the customer center of YESCO, one of the city gas companies in Seoul and Gyeonggi area. … Read more