Sneaky contract terms

Renewed my contract online in 2020. Decided on the phone I wanted and there was the option to take the contract over 24 or 36 months. I ended up taking it over 36. the contract was for 185 minutes and 2GB data per month. Now 2 years down the line and I get no more data on my package but yet I have to pay the exact same amount. Call them and asked them what is going on and they tell me that the data was promotional for the first years and for the 3rd year I will not receive any data. I told them if this was specified to me when I took out the contract that I would not have agreed to it and I asked them to prove to me where it was specified and that I signed to agree to this madness. They were suppose to email me the contract but yet here I am still waiting. I was *****ed over before by Vodacom and here it happened again. Been with them for over 10+ years but enough is enough. TIME FOR CHANGE!!!!!!!!!!!!!!!!!!