1. The plaintiff's claim is dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

1. Basic facts

A. The Plaintiff, who is a telecommunications business operator, concluded a contract for the use of each mobile service with the Defendant, and used one of the two mobile numbers, and the Defendant terminated the contract for the use of the mobile service with respect to the mobile phone number ex officio on August 9, 2015 on the ground of delinquency in the usage fee of the mobile phone number, and then terminated the contract for the use of the mobile service with respect to the mobile phone number ex officio on October 24, 2015.

B. The terms and conditions on the Defendant’s use of mobile communications services contain the following contents, etc.

Article 9 (Duties of Customers) (1) Customer shall pay the fees by the designated date in accordance with the Service Agreement.

Article 14 (Suspension of Use) (1) If a customer falls under any of the following subparagraphs, the company may immediately suspend or restrict the use (hereinafter referred to as "suspension of use, etc.").

12. Where the payment of fees, which is the duty of customers under Article 9, is unpaid on two consecutive occasions or more (Provided, That where the amount of fees paid each time is at least 70,000 won, the date and time shall be unpaid);

However, if it is impossible to give notice due to any cause attributable to the customer, it shall be deemed to have been given notice.

Article 16 (Termination of Contracts) (2) Company may terminate a contract for use in any of the following cases:

2. Where the company fails to resolve the cause of suspension of use within the period of suspension after the suspension of use with unpaid usage fees is suspended.

However, if it is impossible to notify due to the reasons attributable to the customer, it shall be deemed to have been notified, and the time of termination pursuant to paragraphs 2 to 3.8.