If you have anything to complaint about Indiapost or any customer care helpline requirement of India post, here is contact information of India Post customer care service.
You can use this numbers, toll free numbers to contact India Post
Toll Free Number 1924
8:00 a.m. to 8:00 p.m, (excluding declared holidays & sunday).
Toll Free Customer Care Number(ATM) 1800 425 2440
(For any ATM/Debit card related grievances )
Toll Free Call Centre 1800-11-2011 (For International Mails)