segi
Start free

Billing Terms (Card Mandate)

Effective: 2026-05-13 · The Korean version is legally authoritative.

These terms govern the authorization you give Extension Co., Ltd when you register a payment card with the segi service. They supplement the separate Terms of Service and Payment & Refund Terms; all three documents apply together.

1. Scope of Authorization

  1. By registering a card you authorize us to charge it in the manner described in these terms.
  2. The authorized charges include:
    1. monthly recurring subscription fees;
    2. prorated differentials on plan changes;
    3. one-time quota top-up purchases that you explicitly request;
    4. any other charges contemplated by these terms or the payment terms.

2. Card Data Storage

  1. We do not store full card numbers, expiration dates, or CVCs on our servers.
  2. All sensitive card data is held by TossPayments Co., Ltd. (a PCI-DSS-certified payment processor). We retain only the encrypted billing key TossPayments issues us; the billing key alone cannot be used to reconstruct your card.
  3. We do not handle or log plaintext card numbers anywhere in our systems.

3. Recurring Charge Authorization

  1. On a paid plan we automatically charge your registered card the recurring subscription fee on the anniversary of your first charge each month.
  2. If a charge fails, we retry per the schedule in §5 of the Payment & Refund Terms.
  3. This authorization remains in effect until you remove the card or your subscription terminates.

4. Quota Top-ups

  1. If you exceed the monthly quota (events ingested or session recordings) and choose to continue, you may explicitly request a one-time top-up charge to your card to reset your usage for the remainder of the current billing period.
  2. Top-ups apply only to the current billing period and do not carry over.
  3. Top-up purchases may be ineligible for cooling-off cancellation under Korean e-commerce law once the additional capacity has been used (digital-services exception).

5. Card Maintenance

  1. You are responsible for keeping the registered card valid.
  2. If the card expires, is lost or stolen, or hits a limit, update it from Billing → Payment in the admin console.
  3. If a card you did not authorize is registered (e.g. stolen), notify us immediately; we will release the mandate and assist with the dispute process on receipt.

6. Dispute Procedure

  1. If you disagree with a charge, contact agent@extn.ai first with the charge date, amount, and payment ID.
  2. We will review and respond within three (3) business days.
  3. We ask that you exhaust our internal process before initiating a chargeback through your card issuer.

7. Termination of Authorization

  1. You may remove your registered card at any time from Billing → Payment.
  2. Removing the card stops future recurring charges; if a charge cannot be made on the next cycle, the subscription enters the lifecycle described in §5 of the Payment & Refund Terms.
  3. Charges already incurred (recurring or top-up) are not reversed by card removal.

8. Company Information

These terms are effective from the date shown above. We will publish the effective date of any future revision in advance; existing cardholders must re-consent to the updated terms before performing billing actions.