basically it is an app to prevent scammer calling you
so getcontact use add tag feature to name you
thanks to my brother telling me that my private information is on getcontact
my date of birth, my kids name, my parents name, my full address
a service like google/facebook usually get to publish your data after you sign up and agree to publish your data, but getcontact is different, I have never sign up or agree for them to actually publish my data, but they are doing so without even telling me.
yes you can delete your profile from here, it only allow you to use whatsapp to verify yourself, https://www.getcontact.com/manage