Data taken from incorrect data bundle

Good day.<br> <br> At the begining of November I bought a 2Gig data bundle which expired 12AM on 06-12-2015.<br> <br> At around 3PM on the 05-12-2015 I bought a 1Gig data for the month of December 2015 which expires on 03-01-2016.<br> <br> I then downloaded about 800 Megabites to use up the remaining 1.13 Gigabites left on my old 2 Gig data bundle bought at beginig of November expiring 12AM 06-12-2015.<br> <br> I then found out at (12.10AM 06-12-2015) that the 800 Megabites was taken from my new December 1 Gig data bundle I bought (05-12-2015) which expires on 03-01-2016, and not from the old 2 Gig data bundle which has now just expired at 12AM 06-12-2015.<br> <br> So, Vodacom expired 1.13 Gigs of data and left me with 156 Megabites for the month of December until 03-01-2016.<br> <br> Please could you credit my new 1 Gig bundle and correctly deduct the 800Megabites from the old 2 Gig bundle you expired.<br> <br> Explaining this to the call centre agents (4 calls) has proven futile, they cannot understand what i am trying to explain. And still no response back from the service logs they have done.<br> <br> PLEASE HELP VODACOM :-( - I am left with almost no data for the month of December now.<br> <br> Kind Regards,<br> Steven Brewer