How to buy bulk egiftcard on Vanillagift.com ?

[neverchange]

Hi
Does anybody know how to buy egift-card on vanillagift.com in bulk with custom amount ? I bought normally weeks before but recently it keeps saying that it can't verify my address information. I tried to call supporters many times but they can't do anything but useless words.
My friend has the same issue after buying some cards.
Thank you guys so much!