HDFC Bank — HDFC Bank not able to add beneficiary as it doesn't search ifsc code of the branch

Hi
I have account with HDFC bank.
Since then i have tried to use netbanking but i am not able to add a beneficiary.
When i login and choose adding beneficiary but after entering account number of beneficiary it demands the ifsc code of the same but in the box provided i cannot add the code manually neither it searches on intermet. i am not able to search below ifsc code.
IFSC Code:- HDFC0CTBCBL

I have called customer care many times but after receiving the call they abruptly cut the phone.

I have no doubt now about the pathetic service of this bank.