Wrong caller ID showed for call and "000000" in calls journal
I would suggest the following solution but you need to take care of it from Macbook which is using same Apple ID. 

It is best to always have a backup before attempting something like this


Open the AddressBook folder located on:

~/Library/Application Support/AddressBook
In that folder, you will find three files:

a.  addressbook-v22.abcddb

b. addressbook-v22.abcddb-wal

c. addressbook-v22.abcddb-shm


Delete them. 


Open Contacts and your list of contacts should quickly populate as the index is rebuilt.