You can always check your online credit card account and see if there is a charge there or pending charge for the price of the plan you had picked and tried to activate for your sister . Typically the transactions are posted within a couple of hours to your credit card , or at least posted as pending.
Thanks to all....I contacted a Mod and am waiting for a response.
I had to contact moderator too when I new activated and they fixed everything, I hope they fix your problem soon like they fixed mine:
My sister's credit card was charged $0.10....I assume that is just to verify that i is a valid card ?
Good call contacting Mod to push through her attempt to join the service. If I had to speculate it could be an issue as simple as the payment system losing connection for a while. As the process seems automated aside from your compliance it would definately be under the radar for the Mods.