I see some people have saved me under names I find intrusive, how can I update my information on their phone via Getcontact?

You should know that Getcontact works with information submitted by users, and as a user, you don't have direct control over how other users save your number in the app. Getcontact will show you the name that someone else has saved for your contact if you don't like it, but it doesn't give you a way to change or update how other people have saved your information on their phones.

Unfortunately, Getcontact doesn't have a feature right now that lets you directly change the name that other people have saved your phone number under. The app gives each user the freedom to choose how to organize and name their contacts. The names that other users choose are separate from their own and are controlled by them within the app's user-generated data framework.