SQL & PL/SQL :: Trigger Not Inserting The Records?

I have written a trigger which insert and update on same table and the select statement for update and insert is same. My trigger update the record but doesn't insert data and doesn't throw error as well.

if i substitue all the where condidion value of insert statement then it return row and insert data but doesn't insert when trigger fire so there is no issue with the syntex.

create or replace
TRIGGER SRVCCLLS_RVW
AFTER INSERT OR UPDATE OR DELETE ON SD_SERVICECALLS
REFERENCING NEW AS NEW OLD AS OLD FOR EACH ROW
DECLARE

[Code]....

if i substitue all the where condidion value of insert statement then it return row and insert data but doesn't insert when trigger fire so there is no issue with the syntex