Contact HDFC Customer Care for all types of inquiries. Check 24x7 (all days) helpline number for loan, cards and other financial products of HDFC Bank. Bengaluru, Chandigarh In case you have queries related to credit card, send in your questions/feedback to the following address. Toll Free: 18(Credit Card),18(Toll free for BSNL/MTNL) 3, Karnataka, Bangalore, But very unhappy with the service by HDFC,when they required customers they literally harassed and now no. ICICI Bank, a leading private sector bank in India, offers Netbanking services & Personal banking services like Accounts & Deposits, Cards, Loans, Insurance.