My Whatsapp ticket isn't working

I have bought a Whatsapp ticket and I am unable to send or receive messages I spend a lot of money to buy these tickets only for them not to work. I called the customer care line and it wasn't helpful. This is such an inconvenience especially if nothing is done to assist with this seeing that a lot of people are complaining about this. I would like vodacom to fix this problem or refund me on all the money I've lost.