There are a variety of reasons why a business may have inconsistent and/or duplicate listings. But, if you have changed your business name, address, and/or phone number in the past and you haven't made any updates to reflect this change in your online business profiles, there is a very good chance that you are in need of this service.
Having a consistent NAP (name, address, phone number) across your listings is very important when it comes to your local search rankings. If you change one of these elements and don't do the work to reflect the change, new listings will automatically generate with the new business details, these will coexist with the old listings and this is how you reduce your chance to attract new business.
If you can't remember if your listings were updated after your last location, name or phone number change, just take a few moments to run a search on your business. If your business has inaccurate listings floating around, they will show up in the search results. Also, pay attention to the feedback you get from customers. If clients continually tell your staff that they called several phone numbers before reaching you, or if they were directed by online maps to your old location address only to learn that the business had moved, there is a good chance that you are in need of a cleanup, to help your customers find you.