Strange Data Usage (follow up after no response)

I have logged a complaint here a few months ago, i received no feedback up to now, i have posted several reminders but Telkom is very quiet, so i will log again, Telkom's response very long ago was: "Please be assured that this matter has been escalated to the relevant department. Your reference number AI ********** is being attended to and feedback will follow."

I have spoken to a Telkom consultant about data that expires 01 Jan 2018, against data that expires 01 Feb 2018, my problem is that the data that expires 01 Jan 2018 (doesn't get used), but my data that expires only 01 Feb 2018 gets used.