Payment Policy

This Payment Policy (“Policy”) explains how payments are processed for purchases made through https://interpolationcalculator.com, operated by Interpolation Calculator (“Company,” “we,” “us,” or “our”). By completing a transaction on our Website, you agree to the terms set forth below. Questions regarding billing may be directed to shirinvossoughi80@gmail.com.

1. Accepted Payment Methods

We accept payments through secure third-party processors using the following methods:

• Major credit and debit cards (Visa, MasterCard, American Express, Discover)
• Digital wallets and payment gateways (where supported)
• Bank transfers or ACH payments (if explicitly offered)

We do not accept cash, checks, or money orders unless specifically agreed in writing.

2. Billing and Invoicing

• All prices are listed in U.S. Dollars unless otherwise stated.
• Payment is due in full at the time of purchase.
• For recurring services or subscriptions, billing will occur automatically on the schedule disclosed at checkout.
• Invoices (where applicable) will be sent electronically to the email address provided during purchase.

If you require additional invoice details or custom billing arrangements, please contact shirinvossoughi80@gmail.com.

3. Recurring Billing

If you purchase a subscription or recurring service, you authorize Interpolation Calculator to charge your payment method automatically on a recurring basis until you cancel. You may cancel future charges at any time by following the cancellation instructions provided or by contacting shirinvossoughi80@gmail.com.

4. Chargebacks and Disputes

• You agree not to initiate chargebacks with your bank or card issuer without first attempting to resolve the issue with us.
• Unauthorized or fraudulent chargebacks may result in suspension of your access to services.
• If a chargeback is initiated, Interpolation Calculator reserves the right to dispute the claim and provide evidence of authorization and delivery.

If you believe a payment was made in error, contact shirinvossoughi80@gmail.com immediately to resolve the matter.

5. Declined Transactions

If your payment is declined or cannot be processed, your order will not be fulfilled. You are responsible for ensuring that your payment method is valid, funded, and up to date.

6. Taxes

You are responsible for paying any applicable sales, use, VAT, GST, or other taxes unless exempt by law. Taxes will be calculated at checkout when applicable.

7. Fraud Prevention

We actively monitor transactions for fraud. Suspicious payments may be delayed, declined, or canceled at our discretion. If you believe your transaction was incorrectly flagged, contact shirinvossoughi80@gmail.com.

8. Policy Updates

We may update this Payment Policy from time to time. Continued use of https://interpolationcalculator.com after updates indicates your acceptance of any changes.