[AC Question]

Some of the contacts I have deleted from my phonebook are still appearing.
When selecting the contact the only available choices are: Call mobile - Send contact as vCard - Set default action - Send text message and Add to private contacts.
It shows that the contact has whatsapp, but they do not appear in my whatsapp contact list.
I cannot delete them. Please note these contacts are not linked. They are also not included in any of my social media accounts such as Facebook, Twitter, LinkedIn, etc...
They were added for short term purposes and now I cannot get rid of them.

Please help. Thanks!