Deleting Contacts

I have an email contact I wish to delete - this is an old email address and I keep using it by mistake (when I type the person’s new address it brings the old one up first).  However, when I go into contacts there is nothing there i.e. not one contact is listed.  Am I missing something?  Any help appreciated.

I had the same problem - you will have a backup copy of your contacts.  Open the backup and delete the contact from there

Thanks Ivan but I am not sure I understand.  Where would I find this backup please?