Let me help, @itshallbedone.

Generally, if you have billable expenses for your customer, this should show on the Transaction List by Customer when filtered. Let's figure this out together and ensure you get the result you need.

When creating the bill, did you check the billable box and enter the customer on the Customer/Project column? If you did, this will show on the report when you filter the transaction type to billable expense charge. I've attached some sample screenshots below.

To know more about tracking billable expenses, please refer to this article: Enter billable expenses.

You can also track billable time by job. If you need it for future use, you can check out this link: How to enter billable time by job.

I hope this is what you're trying to achieve. If not, you can always get back to me and I'll help you further with your entered bills.