I understand your frustration and want to make sure this will be taken care of, JGF TRUCKIONG.

I can see that my colleague has already mentioned that the duplicate-name issue has been resolved. Therefore, I recommend clearing your browser's cache to get  fresh data from Intuit servers. This will replace any cached files that may be causing the duplicate names to appear on checks. Please refer to this article: Clear cache and cookies to fix issues when using QuickBooks Online.

If you need more help, please don't hesitate to go back to this thread. Take care and have a good one!