Breach of contract

I took a 24 months contract with Telkom on mobile number ********** 000, I signed up for a R199 contract which provide me with a P9 light handset, 1GB data, 50 minutes, 50 sms's and 2GB for whatsapp for 24 months ending November 2018. This month I did not receive my free minutes, to my surprise, I called Telkom on 081 180 and spoke to Nothando, she told me that I will never receive free minutes again until the end of the contract. That is so absurd because when I signed up, they told I will get free minutes for 24 months. It's April now and for the next coming 7 months I will not be getting any free. I'm very angry and disappointed because this is not what I signed up for, I feel ****med. This is absurd. Please assist me