Bombay,
I have bought many items from SRD and other US vendors (Sinclair Intl etc.) with no problem at all.
It is most likely that the item is at a Post Office or sorting office awaiting the scalping charges to be paid !! :(
If you have a tracking number, you should, after some effort, find out where the parcel is. You can then get in touch with them.
Have fun !
Best regards
Russ