Creating two tables that I can reference with MicrosoftQuery

I don't have Excel 2013 so unfortunately I can't easily create relational data in Excel 2010. I'm looking for a solution to a design problem. I'd like to have 2 tables which I can join with Microsoft Query and run pivot table reports.

My department processes payments, both for internal clients and external clients. My Payments table looks like:

Date | Type (internal/external) | Operation (what type of payment) | Method (internet, mail, etc) | Quantity

Additionally, I have a table for Mail Opening, which looks like:

Date | Employee | Operation | Quantity

My overlapping fields are Date and Operation. Using each table individually, I can get nice pivot table reports. What I'd like to do though is be able to not just see what operations and methods were run each day with what quantities, but also to compare that to how much mail was opened. Employee and Operation is a multi-multi relationship, so when I join by date, I end up getting incorrect numbers because of problems with the data layout. I'm open to changing my data structure, as I know the way it's set up right now isn't great, but I'm having a mental block on how to redesign it. I attached a sample workbook.