Duplicate listings occur when search engine crawlers and data aggregators auto-create local listings. These listings are created on your brand's behalf using information they find across the internet.
The solution to this problem is duplicate suppression. If you delete a duplicate listing manually, without deleting it at the source, you may find it can continue to pop up. This can create a time-consuming, repetitive cycle of reactive updates.
To fix your duplicate listings for good, you need to correct this issue at the publisher level. Until the source information changes, data aggregators and search engine crawlers will continue to create these listings on your behalf — and show them in your customers' search results.