You have run out of airtime and data

I am seriously annoyed at MTN. I have Internet data but for some reason they redirected me to a web page saying 'You have run out of airtime and data'. How in the Hell can this be MTN.<br> <br> Not only this, before airtime disappear from my account and I received SMS's saying I was using data at OUT OF BUNDLE Rates while I still had Internet data.<br> <br> No MTN - this is not on. There is something seriously wrong with your system or someone is *****ing funds from your clients. Sort it out before someone lays ********/*****/*******ion charges against you.