Blue Dart Express — unresponsive from delivery guys

Address:

Tirupur, Tamil Nadu, 641602

Every time whenever my documents arrive through this courier always they kept it 3 to 4 days in their office or return it.
This time again my waybill no [protected] has recived on tirupur office at morning 10.00.. I went there office @ 11 o clock.. They told they will call me.. But no reply.. Today morning went to there office. They told our office staff will deliver it today.. But till now no body delivered my documents.
Please take necessary action and reattempt delivery for the same asap.

Hoping for an early action from your side and take action against these executives who simply dont wish to work.