Incorrect Data bundle being used up first.

Hi <br> <br> I have a problem with the incorrect data bundle being used first. This has resulted in data that I have paid for being forfeited due to it expiring today.<br> <br> I purchased a data bundle to supplement my monthly data package as I had run out of data. When I looked at my account today, I saw that the once of bundle purchase still has 2.45 GB available but would expire as at tonight(23 Sep 2015). My monthly data package had an expiry date of 01 Nov 2015 but this was all used up!<br> <br> Surely the bundle with the earliest expiry date should be used up first or else you are robbing clients of their hard earned money by using the newer bundle first and allowing the older bundle to expire.<br> <br> Thank you<br> Nishaal<br>