India Post — parcel under customer hold and india post not responding my email and phone

Address:

New Delhi, Delhi, 110060

Sir,
Just before i was trying to track my parcel vide awb cc[protected]sg as below todays tracking status. When i called to india post customer care phone[protected], she replied that your parcel is under delhi custom, i asked to provide the reason why hold this parcel by delhi custom department. She replied no idea and you have to contact custom department when i asked to provide custom department phone no or contact information she said i am transferring the line to my senior manager he will reply your all queries but no one picked up the phone after transferring the line and i was holding the phone line approx half an hour the same has repeated two times. When i tried to filled online complain, i found some error msg pls see below screen shot.
I searched again and found another phone number toll free call centre[protected]For international mails), i tried many times to call this no but no one is picking the phone.

Deputy director general (Pg & qa), dak bhavan, sansad marg, new delhi — 110001. [protected]@gmail.com[protected]Tel),[protected]Fax)
The above no is also found and called but the same thing no one is picking the phone.

Hope you will help out to deliver my parcel asap and improve your system so that no one will face the same problems.
Thanks
Anand
Mobile [protected]