Workers and delivery has no sense at all. Review on Flipkart

While as a new customer and also to new user as flipkart just after snapdeal.i tried using it to buy a new memory card for my device as it was showing low price tag in it.while I was ordering it first of all it charge about 40rs for delivery and also the date expected to be delivered was about long.well I ordered it in no commense and after some after the expected date the courier worker called me and asked to come in his ofice to get my parcel from them.i have asked them why I should go they are saying that as because of no worker and more wprk I have to go or else the parcel cant be delivered.what to do with these type of peoples so just compromising myself I went and took and I sae in that time that how they throwing the parcels as if it has no value .so please flipkart kindly get some strictness over the workers.thanks.