Vodacom shake

Vodacom customer care gave me a bad service this morning and failed to solve my problem after talking to them for more than 45min.

I always use my Vodacom App everyday for the shake reward thing so on 26Oct I received an sms that I won an entry draw to win 10GB every month for a year then on the 06November i received a call and a sms that i won 10GB for a year, and I received my first allocation so this month I didn't receive anything, I called the customer care the lady who was assisting me this morning said it shows that my number won that 10GB but there's nothing that she can do she explained alot of things that maybe that data Vodacom was thanking me for being a loyal customer.But I have the SMS's that I won and my name is the second one from the top on their winners list in the my Vodacom App so this shake thing is something else.