Terms and Conditions not Met as to what is Printed

This is just very frustrating. And im at the point where I'm very unsettled. Worst part is that the "Manager" or rather no one can help me in store. When i signed my Contract with Telkom, i signed for a Huawei P30 FreeMe 1GB deal on the 07 April 2019. This Service and Goods which were Described on the Telkom Offerings Schedule and which was provided at the price that was out under the Tariff Plan all of the sudden changed in the new month. When i visited the store they gave me a completely different story and the Manager refused to see. This was never resolved. Still as in today.

Is there anything i could do? As i'm Aware that my Subscriber Standard Terms & Conditions were not MET