Not happy at all

I bought a router from pep I saw it on line it said upon new Sim card registration I will get 50GB day and 50 GB night, when I bought it only find am not getting it 😳I will get 2GB and 2GB and that's a maybe there's a possibility I may not get it but on the sim card it's written I will. I am very frustrated I did not buy the router from other retailers because of that special 50GB +50 GB I was getting at pep.. I need explanation and I need my data to uploaded on my router because Pep and Vodacom seems like they adverti*****t is a lie for us to buy things from them only to find we won't get what is promised.. I have attached proof.