PickMe India — katraj post office,pune

Address:

Pune, Maharashtra, 411046

I have an important post which is kept at katraj post office, pune!
I called them few days back to inform that i have not received my parcel, so they said you have to call between 9-11 because postman is available at this duration of time. Only postman can inform me about my parcel.
So i am trying calling them since 3 days between 9-11 but the phone is busy since 2 hours.
I know they put the receiver on side so that no one can disturb them. I have seen them also doing this.
But now i am residing very far from the post office so i can not go to the office directly and pick up my post directly.
Their behaviour regarding customer delivery is really irresponsible.
I have to urgently submit the documents in company for that i need my parcel asap.
I filed a complaint on indian post also but no response yet.
Please provide a solution.