PCX-18883 Billing Overview updates (#24893)

* PCX-18883 Billing Overview updates

* Update pay-invoices-overdue-balances.mdx

Fixing warning box and removing note box, to comply with style guide

* Small style edits

* Tiny edit

---------

Co-authored-by: Simon <[email protected]>
Co-authored-by: Denise Peña <[email protected]>

Author: 3 people

src/content/docs/billing/index.mdx

@@ -9,8 +9,40 @@ head:
 description: Manage billing and subscriptions for your account.
 ---
 
-At Cloudflare, our mission is to help build a better Internet. We believe the web should be open and free, and that all websites and web users, no matter how small, should be safe, secure, and fast. Cloudflare always has and always will offer a generous free plan for [many reasons](https://blog.cloudflare.com/cloudflares-commitment-to-free/).
+Welcome to the Cloudflare Billing and Payment Help Center! Here you will find answers to some of the most common and impactful issues facing our customers today. Most current issues revolve around:
 
-We work hard to minimize the cost of running our network so we can offer huge value in our Free plan. On top of this, protecting more sites means we get better data about the types of attacks on our network so we can offer better security and protection for all.
+* Payment failures
+* Outstanding balances
+* Subscription renewals
+* Cancellation requests
+* Updating payment methods
+* Understanding billing cycles
 
-As a privacy-first company, Cloudflare does not sell your data. In fact, Cloudflare recognizes privacy in personal data as a fundamental human right and has taken a [number of steps](https://blog.cloudflare.com/certifying-our-commitment-to-your-right-to-information-privacy/) to demonstrate our commitment to privacy.
+An overview of these issues can be found below:
+
+## Failed Plan Modifications
+
+You may receive an error when attempting to purchase a product, pay a balance or change a paid plan. Review the following guides for possible solutions:
+
+* [Resolve a payment failure](/billing/troubleshoot-failed-payments/)
+* [Resolve the zone cannot be upgraded error](/billing/resolve-zone-cannot-be-ugpraded/)
+* [Resolve "You cannot modify this subscription"](/billing/resolve-you-cannot-modify-this-subscription/)
+
+If the problems above do not apply to you, there are intermittent issues with subscription upgrades, downgrades, and cancellations. This may result in billing charges being applied without the subscription level being updated. In these instances, you should [contact support](/support/contacting-cloudflare-support/).
+
+## Cannot update or remove payment methods
+
+You should be able to add, update, and remove payment methods in your account. If you are seeing difficulties doing this, refer to the following guides for possible solutions:
+
+* [Update billing information](/billing/update-billing-info/)
+* [Resolve "Cannot remove payment method"](/billing/resolve-cannot-remove-payment-method/)
+
+If the solutions above do not apply to you, we have observed reports of being unable to update or add payment methods within the dashboard. In these instances, you should [contact support](/support/contacting-cloudflare-support/).
+
+## Cancellations 
+
+Cancellations are not processed until the end of the billing period. To understand more, refer to [Cancel Cloudflare subscriptions](/billing/cancel-subscription/).
+
+## Non-refundable occurrences
+
+In accordance with the Cloudflare Billing Policy, be aware that some [Non-Refundable occurrences](/billing/billing-policy/#non-refundable-occurrences) cannot be refunded and you should not contact support to request refunds for these.

src/content/docs/billing/pay-invoices-overdue-balances.mdx

@@ -23,8 +23,8 @@ You can pay your entire balance in one transaction, or if you have multiple invo
 
 ## Understand why you have an outstanding balance
 
-:::note
-It’s important to note that while the earlier invoice may appear as paid, the balance due has not been waived. It has simply been carried forward into a newer invoice for administrative and compliance purposes.
+:::warn
+Please note that some unpaid invoices may not be visible. These unpaid invoices will still prevent account modifications. In these cases you should [contact Cloudflare Support](/support/contacting-cloudflare-support/).
 :::
 
 When an outstanding balance is due, a new invoice will be created in your account for that amount. When you view that new invoice, it will show the original invoice number that the outstanding balance relates to. You can look up this original invoice to understand which product(s) were not fully paid for.
@@ -60,4 +60,4 @@ If an automatic subscription renewal payment fails, Cloudflare automatically ret
 3. Select **Invoices and documents**.
 4. Select **Pay now** next to the invoice you want to pay.
 
-You will be redirected to our payment system to proceed.
+You will be redirected to our payment system to proceed.