Incorrect Subscription amount.

Sales Consultant offered me a price log of 24 months which the agreed amount to pay was R480. To my surprise end of March 2025 my balance was R1400. I contacted the contact center and the 1st consultant that I spoke to hanged up while trying to confirm how can I add on extra costs on Self-Service while I agreed for the price log. 2nd Consultant that I spoke to on the 28th of March asked me to pay R480 and confirmed that the difference will be reversed, I did exactly that. On the 2nd of April my subscription was blocked and requested to pay R450. I contacted multichoice and the consultant told me that her team leader has confirmed that I will not be getting any refund that I have paid as I have added an additional service online and still need to pay R400 to access the service. DSTV has the worst service ... I have had a contract with multichoice for more that 10 years and I will be cancelling the subscription.