Apparently the "lady" in the Tax building is supposed to be rude ... you don't need to talk with her to set up your tax refunds.
I had one of my toons sell 100,000,000 of stuff in GMI on TL to one of my other toons on TL. It was easy as Auto will give you 100M credits if you are short on credits. Approximately 3 hours later my selling toon received 1,000,000 Tax Refund into her org bank. She planted the Tax Refund building a couple days ago, so I don't know if there is a wait period there. There is no feedback about the credits arriving ... they just appear.
Kinnik