PM should be more specific with there details since there is no Customer service or physical locations to where customers can go in and ask specific questions... 'one time' could be interpreted as 'one time per month' ...it's not like they specified ...
Me and my wife thought the 5GB bonus data was one time bonus was added to the account every month but looking through the forums it's only one time feature and when it's used up that's it...what a disappointment and we ported in. If we knew for sure ...