Most businesses we meet have a Google Business Profile. It was created years ago by a staff member, a web developer or an agency, verified once, and then left alone while the business moved on. Google, meanwhile, kept changing what the profile can show, kept accepting edits from the public, and kept sending customers to it. The gap between what the listing says and what the business actually is widens quietly, and it shows up as missed calls rather than as an error message.
Why it persists. The profile is nobody's job. It is not the website, so the developer does not touch it; it is not advertising, so the agency reports on it only when the numbers look good; and the owner opens it only when a bad review arrives. Google adds features, changes the rules for categories and descriptions, and applies public edits without asking. A listing set up correctly in one year is incomplete two years later through no fault of anyone in the business.
If it stays unresolved. Local search keeps growing as the first place customers look, and the map results keep favouring listings that are complete, active and answered. Left alone, your profile keeps losing ground to businesses that simply maintain theirs, and the enquiries that should have reached your phone reach someone else's.