1. you asked for a custom part, they might be a bit busy, and didnt get back to you right away. they have to go through channels (talk to fabricator, etc) for a custom part, and the profit margins on a driveshaft would not be high so im sure they didnt drop everything just for you.
2. they got your postal code correct? did the packages got to your house on time? so some boys from georgia spelled your city wrong... when i tell someone i am from hollidaysburg, PA. i dont expect them to spell the name right, if they have the zip code it will get here fine.
3. the pulley kit was most likely on backorder, if they didnt have it in stock and neither did unorthodox, you will have to wait.
GOD. there is a difference between good service, and a customer who can't be pleased.