Hi, we're sorry to hear that you're having an issue keeping the sink clean causing you to not have a great experience with our Elkay ELGU3322WH0 Quartz Classic Equal Double Bowl Undermount Sink. Thank you for letting us know about your experience. It is our priority to ensure customer satisfaction. I have included the links to our online Help Center for our Quartz Care and Cleaning and Removing Stains from Quartz sinks. Please contact our Customer Care department by phone at 800-476-4106 or email at productsolutions@elkay.com to discuss the matter in more detail.
https://helpcenter.elkay.com/hc/en-us/articles/360004305494-Quartz-Sinks-Clean-Care-
https://helpcenter.elkay.com/hc/en-us/articles/360039070334-Removing-Stains-From-Quartz-Sinks