I have been reporting Map App problems for over three months.
One thing I have been trying to do is remove a business that closed about fifteen years ago but still there with a named button. The site was bulldosed over ten years ago & is now covered by private housing.
The info box attached to the button has a phone number that has since been realocated as a private number. The owner of that phone has started getting calls from people who have obtained the number from Apple's Map App. He would like that to stop. Is there away to ensure this gets done.
Other than reporting it as you have already done, no.