It sounds like you need a report that can provide details on receivables broken down by services, IDmi. Let me offer an alternative way to achieve this.
Although the A/R Aging Summary report doesn’t show receivables by service, you can customize the Sales by Product/Services Detail Report, manually pick the service items, filter it to A/R Paid, and choose Unpaid to achieve your goal. Let me walk you through the steps:
- From the Sales by Product/Service Detail Report window, click Customize.
- Click on Filter.
- Put a checkmark for A/R Paid and select Unpaid.
- Select the service items.
- Hit Run report.

Check out this article to learn more about personalizing your reports to show specific data that matters to you the most: Customize reports in QuickBooks Online.
After customizing your report, you can click on the Save customization button. This will memorize the settings you've chosen. For a detailed guide on this process, read this article: Memorize reports in QuickBooks Online.
I'll be on the lookout for your response if you have further questions about generating reports or other questions, IDmi, and will address them promptly.