Update service-limits.md

Author: krkutser

articles/communication-services/concepts/service-limits.md

@@ -49,7 +49,20 @@ Before acquiring a phone number, make sure your subscription meets the [geograph
 
 For more information, see the [phone number types](./telephony/plan-solution.md) concept page and the [telephony concept](./telephony/telephony-concept.md) overview page.
 
-If you want to purchase more phone numbers or place a special order, follow the [instructions here](https://github.com/Azure/Communication/blob/master/special-order-numbers.md). If you would like to port toll-free phone numbers from external accounts to their Azure Communication Services account, follow the [instructions here](https://github.com/Azure/Communication/blob/master/port-numbers.md).
+Number purchase limits can be increased through a request to Azure Support.
+
+1. Open the [Azure portal](https://ms.portal.azure.com/) and sign in.
+2. Select [Help+Support](https://ms.portal.azure.com/#view/Microsoft_Azure_Support/HelpAndSupportBlade/~/overview).
+3. Click **Create new support request**.
+4. In the **Describe your issue** text box, enter `Technical` then click **Go**. 
+5. From the **Select a service** dropdown menu, select **Service and Subscription Limits (Quotas)** then click **Next**.
+6. At the Problem description, choose the **Issue type**, **Subscription**, and **Quota type** then click **Next**.
+7. Review any **Recommended solution** if available, then click **Next**.
+8. Add **Additional details** as needed, then click **Next**.
+9. At **Review + create** check the information, make changes as needed, then click **Create**.
+  
+You can follow the documentation for [creating request to Azure Support](../../azure-portal/supportability/how-to-create-azure-support-request.md).
+
 
 ## Identity
 
@@ -259,4 +272,4 @@ When you implement error handling, use the HTTP error code 429 to detect throttl
 You can find more information on Microsoft Graph [throttling](/graph/throttling) limits in the [Microsoft Graph](/graph/overview) documentation.
 
 ## Next steps
-See the [help and support](../support.md) options.
+See the [help and support](../support.md) options.