Toll free Number(s):
1800 209 4006 (Diners ClubMiles, Diners Premium and Diners Rewardz)
1860 425 1188 ( For any queries regarding new bookings )
1800 118 887 (Diners Black)
1800-22-3310 ( HDFC Bank Customer Support )
1800-266-3310 ( HDFC Bank Customer Support )
All India Number(s):
022 4232 0226 (Diners black)