Need PIE Slices as percent of entire PIE

Fellow Forum Members,
Attached is five months of dummy sales data for eight products. My objective is to filter this data for a 2, 3, 4, 5, and 6 week date ranges, and have my pie chart dynamically change for each corresponding week range I filter. I'm seeking for the size of the Pie Slices to automatically change, as well as the Legend and the color of the Pie slices depending on the products that were sold for the filtered weeks.

LASTLY, I need the Pie Slices to show as a single pie slice for products that show up multiple times once I complete a filter. Attached you will find a dummy data excel file I have setup. You will notice that Product A shows up 4 times in the filtered data, and also shows up as 4 individual pie slices in the Pie chart. This is WRONG. How do I make Excel display the Product A Pie slice as a single slice that is proportionate to the entire pie? I do not want to see four pie slices for Product A.

Does this require very complicated VBA coding? I would appreciate any help any one can offer.