Data bundles mysteriously disappearing

<p>I am so disgusted at cell c - I just loaded R60 airtime anf purchased a 300mb data bundle and havent even downloaded or been on a site nore than 10minutes and I get an sms saying bundles depleted - 300mb used to last me a few days now its gone this is so terrible - I want a refund how do I get cell c to refund my airtime - this is bull man gees I feel like changing back to vodacom cell c is just a *******. </p>