Why does Vodacom ***** data?

So I went through the torturous IVR menus before finally speaking with 3 different agents having not only bad attitudes but also what seems to be a lack of product knowledge and relevant customer insight. I sent an email asking the manager of said staff to call back which never happened. Where is the quality service Vodacom so frequently advertises?!? Vodacom has repeatedly taken data after I have loaded airtime. The norm has been that, when the data bundle is depleted, you just take airtime at will ... Unacceptable ...