Cell C Data *******

So I am a pay as you go client. Have been for over a decade. As I am a pensioner I try to manage my airtime and data purchases carefully so I don't lose unused balances. On 10 August at 15H33 my daughter bought me 1G of 30 day anytime data. If you purchase more data within the 30 day period what is unused of the original data is not lost. So my take on 30 days equates to 9 September @ 15H33. I bought a topup on 9 September @ 07H07. You guessed it: Cell C politely stole what was left of the 1G (around 900MB). This is how these thieving *******s make their money. *****ing your data and airtime! Needless to say I intend to fight for this. It's BULL**** that they just do as they please!!!!