Need help editing contacts

[PsychDoc]

So I have some contacts with outdated phone numbers. When I open up the contact in question and then hit the edit tab I often don't see the number(s) that need to be changed or deleted. Across the top of the screen right under the "save" and "cancel" tabs I see a horizontal list of where this contact has an entry - - Google, Phone, Cloud, WhatsApp. Sometimes the phone numbers I'm looking for are in one of these but there seems to be no way to edit these as the entries are greyed out so they cannot be changed.

FWIW on the main Contacts setting I have it set up to only display Gmail linked entries.

Can anyone give me a step by step way to get rid of incorrect phone numbers listed in any given contact entry?

Any help would be much appreciated.

 

[PsychDoc]

Anyone?