Paying for no service!!!

So last week Tuesday I purchased a 500mb data bundle for R99, from the Vodacom shop in The Grove, for my mobile data device. Normally this should immediately reflect on the device immediately. After waiting a few hours I phoned and was told that someone would contact me within 48 hours. I didn't need the data bundle 48 hours later or else I would have bought it then! The next day I phoned Vodacom and they told me it would be another 48 hours before someone contacted me. I was finished!!!! I insisted on them refunding me a monetary refund. They refunded me R34 and then R35 but I'm still outstanding R30. I have contacted them to no prevail. Vodacom...... besides ripping your customers off when it comes to the price of data bundles your service is pathetic!!! I cannot wait to finish my contract with you and move to someone who won't require me to sell my left kidney for data!!!