Be careful Vodacom rewards one big lie

I was called by a gentleman by the name of David from the Vodacom rewards department. He advised me my current data plan is comming to an end and he would like to offer me a sim card where I can transfer data to any Vodacom number (10GB for R149 per month). I asked him if he is both sure my contract is comming to an end and if I can transfer data to my prepaid number he assured me it's possible. He advised I can just call the cancellations department to cancel my current plan. I did exactly that and to my surprise they confirmed my plan is only coming to an end in August. The agent tried to connect me to the rewards department but had no luck getting through to them so he logged a query. I then received a call from a fulfillment agent in the rewards department by the name of Snethemba. She advised me they still want to offer me the contract they will give me the first 2 months for free all I have to do is call customer service when I receive the sim card. I did exactly that, the agent confirmed they cannot give me the first two months for free it's not allowed. I then tested the sim card to see if I can transfer data to my prepaid number and yet again I was **** to. Customer service confirmed it's only possible if you are on the same price plan. I am very disappointed in how I was treated after being a loyal customer for about 8 years. I want this investigated and I want answers