*****ing from my wallet

I bought a 24 hour data bundle from MTN. I bought it at night so I could work but it only went active at 4.30 in the morning (who wants that?). The next day I was using it but found MTN had depleted my airtime rather than using the bundle. I called support who said it was probably my fault. On what planet???<br> <br> I made them log a query but no-one has got back to me (of course)