Delivery services like Doordash, GrubHub, etc. hijack restaurants’ google listings, inserting their own number that forwarded to the restaurant’s actual number.

Whenever a customer called into the delivery service number, the restaurant would get charged as if they had placed the order through the service.

https://ny.eater.com/2019/5/20/18632443/grubhub-nyc-restaurants-fees-fake-phone-calls-no-order-lawsuit

Also, they hijack the google listing and direct orders to their own ghost kitchens.

https://www.reddit.com/r/Entrepreneur/comments/lw7cdu/food_delivery_companies_hijacking_your_business/