I see what you're saying. Thanks for giving me a bit of additional information to go off of. 

Your best bet is to look at the Invoices and Received Payments Report. If you're looking to filter through these invoices and payments for each customer individually, you can create an additional column to specify the customer by clicking the small gear icon above the report title > Show More > check off the box next to Customer. Then click off the customizing options box and you'll see your new customer column appearing there. 

I hope this is better suited to your needs. If that's still not quite what you're looking for, please feel free to reach back out and we'll go from there. 

Cheers!