Airtime and Data bundles wiped out for no reason

I bought R55 airtime on 25 April 2015, I then used R29 to buy 100MB of Data, the remaining balance was but I received an SMS at around 04:50 AM on 27 April 2015 stating that my data bundles have been depleted, I then checked the balances only to find out that my airtime was wiped out as well, I called vodacom &amp