The reason to reject is very dubious. As we do not have access to your stored data. So basically, if you wish to purchase more, you need to make your stored data public.
Either they wish for you to switch to reseller, which itself is wrong and forcefully, else they are just acting out of line.
The reason given is absurd and makes no sense.
If you get any update on it, do post here. I too am hoping on getting more servers in the near future, but if their sentences are such then it makes one wonder...