Tracker data mining ?

The app seams to work but after sending invite the app ask for access to your contacts. I allowed access but then decided it not necessary for app to access my contacts. With no way to contact app maker I decided to delete account n start a new one but this time deny access.
I was surprised to find app does not require access approval to contacts after account was closed n app reinstalled. I would have to assume app maker does not completely remove previous information about account holders. Data mining ? Why cant I contact anyone? no app support, phone num or even email address. We should all be aware of what information is collected when giving access to our contacts.

Private Bob about GPS Phone Tracker-GPS Tracking