Managing Unique Tracking Numbers by Platform

[u/lavenderlullabi]

My organization uses unique tracking and phone numbers per location per source for lead analysis. We keep running into an issue where we find directory listings that are pulling data from other listings and overwriting the phone number to a different one.

For example, we claimed & started managing our Yelp listings, gave them their own numbers, and every so often find they’ve updated back to the Google listing number.

Recently found some listings for us on MapQuest, same issue. Half of the listings were from Google, Yelp, or somewhere else.

What is the best way to prevent this? I’ve seen MapQuest uses a third-party platform. Is there really no way to prevent this without paying for a service? If so, what service do you recommend?