Just now i called helpdesk again and she manage to help me
resolve the issue and just now i wrote a feedback to citibank
management
heres the content
Hi i wish to complain about a lady in the application management
department
this whats happen
2 weeks ago on saturday i applied the citibank clear card
online
i printed out the forms, nric, payslip and other relevant
documemtations
last monday i mail it with an envelope and sent it to the
address stated on the website
then last sat i received a letter from them stating to resent
the nric, payslip, cpf statements and the declaration form
again
of course i feel angry there4 i call this morning to reason out
with her
not only do she not bother to check for me as i have my
reference number 411132901
she keep insisting that she did not received my hard copies
and u know what she do
she actually hung out on me!!!
wtf
what type of attitude and management is that?
which is y i am lodging a complain rite now
pls take drastic action against her
and at the same time
i wish to commendate Gloria from Citi Phone department
she’s a good helpdesk personnel 
despite my frustration and anger she manage to talk nicely to me
and even help me check based on my reference number whether they
have received my hard copies of the relevant documents, and in fact
they received it, except for my cpf statements which i am awaiting
for my singpass id and password and i will be submitting my cpf
statements within the next few days
thumb up for her
Well if u want me to comment on your letter then you should
change ur way of writing... U can leave out shorthand like "wtf" as
it's not... ... .. appropriate...
Do note that some company does send GENERATED emails to people
lodging complaint... Meaning the reply u receive that states they
are looking into it is actually a computer generated email...