This page explains how payment options, order totals, transaction authorization, and checkout security work when you place an order through oasoi.com.

01. Payment Methods

The payment methods available for your purchase are displayed during checkout. Available options may vary depending on your location, currency, device, order details, and the payment services enabled at the time of purchase. Select an available payment method and follow the instructions presented at checkout.

02. Payment Authorization & Verification

Orders may be subject to payment authorization, transaction verification, and fraud-prevention review before acceptance or fulfillment. Your bank, card issuer, or payment provider may request additional verification, decline a transaction, or place a temporary authorization hold. Such decisions and the duration of authorization holds are controlled by the relevant financial institution or payment provider.

If your payment cannot be verified, order processing may be delayed or the order may not be accepted.

03. Checkout Security

Our online store uses Shopify and applicable payment providers to process transactions. These providers use security measures intended to protect payment and transaction information. oasoi™ does not store complete credit or debit card numbers on its own servers. Payment information is handled by Shopify and the applicable payment service providers.

For your security, we will not ask you to email your complete card number, card security code, or online banking password.

04. Prices & Final Order Total

Prices are displayed in U.S. dollars (USD) unless another currency is clearly indicated. Before submitting payment, checkout displays applicable product prices, shipping charges, taxes where applicable, discounts, and the final order total. Review the products, quantities, shipping address, discount codes, and final amount before completing your purchase.

05. Financial-Institution Charges

Your bank, card issuer, or payment provider may separately charge foreign-exchange, currency-conversion, international transaction, or other financial-institution fees. These charges are determined by the relevant institution and are not controlled by oasoi™.

06. Discount Codes & Promotions

Valid discount codes should generally be entered before checkout is completed. Confirm that the discount appears in your order total before submitting payment. Promotions may be subject to expiration dates, product eligibility, minimum purchase requirements, exclusions, usage limits, and other conditions displayed with the offer. Unless stated otherwise, promotional discounts cannot be redeemed for cash or combined with other offers.

07. Declined, Pending, or Duplicate Charges

If your payment is declined, check your billing details and contact your bank or payment provider if necessary. A pending transaction may be a temporary authorization rather than a completed charge. The release of a pending authorization is subject to the applicable provider.

If you believe you were charged more than once for the same order, contact service@oasoi.com with your order number and a description of the issue. Do not email complete payment-card or banking credentials.

08. Order Confirmation

After an order is successfully submitted, an order confirmation will normally be sent to the email address provided during checkout. If you do not receive it, check your spam or junk folder and verify your email address. You may contact customer support for assistance.

An automated confirmation acknowledges receipt of your order request and does not necessarily mean the order has completed every verification or acceptance step.

09. Payment Questions

For questions about checkout, payment authorization, a potentially duplicate charge, or an incorrect transaction amount, contact service@oasoi.com. Include your order number where available and a clear explanation of the issue. Never send your complete card number, security code, or online banking password by email.