Vodacom takes money, but doesn't provide service !

At around 09h00 this morning I loaded airtime to my iPad in order to purchase a 2GB data bundle using the Vodacom App on my iPad. The App informed me that I could not buy the data, although I had sufficient airtime for the transaction. I called the Data Support call centre and spoke to a consultant named Duane. He undertook to get the bundle loaded via the back-office, however they could not do this due to a technical problem. He referred me to the MyVodacom site on the internet and this too was not working. He issued me with reference number *** and suggested that I try both the site & the app on an ad hoc basis. He also undertook to call me back my 11h45 with an update - still waiing. I tried several times to access the app, to no avail & this has used my airtime for the transactions. At 12h03 I again called the Call Centre & they were still unable to assist me in loading the bundle and I was issued with a subsequent S3-80U21-1SUH2. This is a thundering disgrace that Vodacom cannot even get a data bundle purchase right, but still have the nerve to increase rates as of 1 May. I am unable to work until my data has been loaded. Who do I send my out-of-pocket invoice to ?