21-05-2021 11:15
21-05-2021 11:38
These are probably calls from scammers who spoof numbers to hide their identity.
Nothing can be done to stop these at the moment. They usually move on to some other number quite quickly.
Veritas Numquam Perit
21-05-2021 14:39
21-05-2021 15:00
21-05-2021 15:00
Sounds like your contacts app may be corrupt.
I'd try deleting those contacts and then save them again to see if it helps.
I had a problem whereby I lost a lot of my contacts and had to restore them from a back up so it's not unusual for issues like this to occur.