Citibank Credit Card — very very poor customer care executives

I am holdig credit card of CITIBank and this is appr. 3+ years old. I have spoken to customer care executive and finalized to make the payments on EMIs basis. They did not send me any documentry proof and after 4 days a executive called me at 3 pm to make the payment in before 5.30.

Now once again am correcponding to executives BUT still am waiting for the response. If the Customer Care of a reputed bank will act like this who will have faith on them to BANK UPON!!!