My Vodacom App crashing!!

The My Vodacom app is crashing when i try to buy anything from the Vodabucks store. This is so poor from a big company like Vodacom. I went to a Vodashop for help and the Vodacom employee told me they have endless calls logged of subscribers not getting their airtime, bundles while the money has been deducted from their bank. We want to spend money on your app but unable to. Get yr Act together VODACOM