If you would like to any inforamtion from Post office then you can dial their Toll Free Call Center Number 1800118282, calls to this number is 1800-11-8282 free of cost its a tollfree number.
Alternatively you can also dial Toll Free Number 1924
Post Office Customer Care Number
In India: Dial Below Toll free Numbers
1800118282 or 1800-11-8282
1800119888 or 1800112011
Above Indian Speed Post Toll Free Customer Care Number will also work sometimes.
Toll Free Call Centre 1800112011 or 1800-11-2011 (For International Mails)
e-Mail : https://webmail.indiapost.gov.in