Night data

Telkom is such a ******* I've been noticing for some time whenever I buy data they say they give u free night data but it's a lie I would go online after midnight but the night data doesn't go off instead it takes from my day data when I check my balance it shows I have so much night data but il keep getting sms that my daily data is running out I'm sick and tired of telkom will rather change my network provider i spend so much money on data so be ****** like this