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I really don't think the solution selected as the "Best Answer" embodies the problems correctly. 

1st I think it's important to direct a person with this question to the decided workflows Quickbooks Promotes. You can find them here:

Get started with customer transaction workflows in QuickBooks Desktop

The next step in the question is to answer the user's question directly. How can you see the deposits of a customer if you don't invoice or follow one of the workflows. The answer is to 1) List the Customer in the "Received From" on the Line item of the deposit. Then under the Customer Transaction select the Type "All plus deposits" (img Item 1). The deposits will show up there.

The Third Piece of this question is to provide the simplest workflow solution that would solve the problem presented. In this case this is Workflow 2. Which is "Workflow 2: Sales Receipt - Deposit". If you take the time to do this, then you will still be able to capture Customer Transactions related to the services and also create a deposit receipt from multiple customer transactions.

In our scenario we created an Item: "301 General Services" to capture all the income received. This provides a very simple transactional entry that makes the rest of the process relatively painless.