Amazon India — Dissatisfaction in delivery

Address:	Tiruchirappalli, Tamil Nadu, 620015
Website:	Amazon.in

I'm a student at nitt, tamil nadu. Here the amazon orders are to be collected by us at certain places. I have no problem in going to these places except that there are four delivery points for four different courier services. They tell you neither the place nor the package you are receiving. At times, i order more than two orders together.
When something is up for delivery i'm not intimated regarding what the package is. Is it cod? Is it paid for? How am i supposed to get the cash ready if i don't know what i'm expecting to get?
The most frustrating thing is when the order gets delayed saying i'm not available even though i received no information from them regarding the delivery.
Please sort this out with courier services because i pay for the delivery as well.