> ## Documentation Index
> Fetch the complete documentation index at: https://docs.centipidbilling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Usage, invoices, and receipts

> Read subscriber usage, pay invoices, and download payment receipts.

# Review service and billing history

## Usage

Open **Usage** for current month totals, package/FUP context, a 30-day daily chart, and session rows containing start/stop, duration, download/upload, and IP where available.

Usage depends on RADIUS accounting. A session still open or delayed accounting record can change later. Use the displayed units and period; router-interface totals are not necessarily the same as one subscriber's accounted usage.

## Invoices

Open **Invoices** to see invoice number, amount, due date, and status. Open a row for line items, total, paid, remaining, issue/due dates, and current payment action.

Statuses can include pending, partial, paid, cancelled, and overdue display state.

### Pay an invoice

1. Confirm invoice number, line items, total, paid, and remaining.
2. Choose the payment action when the invoice is payable.
3. Confirm the prompt/checkout for the remaining amount.
4. Authorize payment.
5. Wait while the page polls the checkout status.
6. Verify the invoice reloads as paid/partial and the payment appears in receipts.

The current page can present an M-Pesa prompt depending on the ISP's gateway. A provider/browser return does not by itself prove the invoice is settled.

## Receipts

Open **Receipts** for payment date, amount, method, and receipt/reference. A PDF download is available when the payment has a receipt number.

If a receipt is missing or incorrect, contact the ISP with payment date, amount, masked phone/account, and provider reference. Do not send a PIN, OTP, password, or full financial credential.

## Disputing an amount

Do not pay twice while asking for clarification. Record the invoice/payment identifiers and use [Portal support tickets](/customer-portal/support-tickets). The operator can compare the invoice activity, linked payments, package, and provider record.