Can not buy bundels online, ussd or whatsapp.

When you increase your spending limit and want to purchase a bundle using the USSD code. It states you have insufficient funds. When you use Whatsapp it does not give the purchase option to use your spending limit. When you call them, and do the verification the support agent ca increase the spending limit but not load a bundle. Hence you cannot buy bundles. Have not tried purchasing from a store yet but yeah should not be necessary.