Debit card — i lost my debit card

i lost my debit card. n i want to block it.. i tried to contact to the toll free no given to do so ..but nobody is picking up the phone...so cud u help me in this as soon as possible.My contact no is [protected]

details:
name: Dilina .Divan
a/c no: [protected]
branch: kollam
mothers name: shylaja .p
D.O.B[protected]
Address: Kakkokkara house
Chorode p.o
vatakra..673106
Pin no: 4771

i lost my debit card, please block my card and send the procedure to get new card.
A/c No. [protected]
A/C Holder Name :- devendra joshi
Branch : rajiv chowk new delhi