In our Account is private , So the list views in accounts should show only the users own records for which he/she is the owner of the record. But it is also showing other records for which he/she is not the owner, but an activity is assigned to the user. (A call is logged using Log a call function and assigned to this user earlier) because of which this user is able to see that records too for which he/she is not the owner.

How to hide this record for which he/she is not the owner of the record.?

In our Account is private , So the list views in accounts should show only the users own records for which he/she is the owner of the record. But it is also showing other records for which he/she is not the owner, but an activity is assigned to the user. (A call is logged using Log a call function and assigned to this user earlier) because of which this user is able to see that records too for which he/she is not the owner.

How to hide this record for which he/she is not the owner of the record.?