To delete a contact from Talkdesk, you will need to start by locating it in your "Contacts" section.
You can search for contacts (and sort contact lists) by the contact’s first or last name (“Name”), the contact’s email (“Email”), the company the contact works for (“Company”) or the phone number the contact dialed when calling your company (“Number”).
Open the contact by clicking either the name or phone number. Then, click the “Settings” button  and select “Delete Contact” .
Note: Deleting a contact will only delete the contact’s profile information. All calls and data related to that contact will still remain accessible on your Call History list and the contact's history.