Problem with a purchase shown on your statement: Credit card

I opened a dispute and I should be the one to say when it is closed not the company I am complaining about. Citi bank did not resolve the issue why are you letting them close the complaint. I have a detailed spreadsheet proving my point. Best buy shows my refund but Citi bank continues to bill me. I suspect fowl play here. The attached Excel spreadsheet has 7 tabs, start with the summary tab, then def charges and then def charges details and then look at each year