I think sometimes we forget that it takes time to process things. As for accounts it is also true in real life, to return any funds needs paper work so their books match up at end and that they dont get hit by tax for it either. So sure week seem to be a long time to wait, but considering that your not the only person they helping and have to send things to, you can kind of understand why return of things can take long.
Sadly the process of any return transaction.