Unhappy with Vodacom

<p>August 2016 I took a new contract with Vodacom secunda branch, The promotion was you get P9 Lite + 5GB data but no one explain to me that the data last for one Month, Everytime when I check my balance, will receive sms saying my data is expiring 15/09/2020 and I have quiet a number of smses saying the same thing. The begining of this month( October) when I check the balance, My data balance is zero, Tried to contact Vodacom I was told my data were deactivicated as it was valid for 1 month. I am no happy with vodacom as no one tried to explain this to me.Now I have lost my 4GB data.</p>