Bluedart — not delivering at my area

I have purchased items from amazon and they picked a bluedart as a courier provider with tracking number [protected].

Bluedart picked up my parcel and they are sending sms to me around 11pm and says that they are unable to deliver in my area.

Now my complaint is that if they are unable to deliver then why did they picked up the parcel.

Again i like to know that whom do they need to inform whether me or amazon who have given them a parcel to deliver.