Misrepresentation- False Offer

In September, I got a discount offer from Multichoice to pay R379 per month for the next 3 months. I paid for September without any issues however when I followed the payment link to pay for October, the amount was now R611 which is the normal amount without the discount. I called on Sunday the 31st October and was informed this was escalated. When I informed the lady that my service would be disconnected the next day if I did not make payment, she told me she had requested that they do not disconnect while they resolve my payment complaint. On Monday the 1st November, the service was disconnected. I called again and complained, I was asked to send them the email in which they had offered the discount. I sent the email even though they should have this in their records, also their records should show that paid R379 in September. They then connected me again so I could watch tv but still could not pay as the amount owing was now showing R711. I sent a message to their twitter account, I am appalled by the responses of whoever is handling that twitter account. The twitter account just kept telling me the discount falls away once they disconnect the account for non payment. He did not bother to address the fact that I could not make payment because of their error. Now I am receiving messages that they will disconnect me again. I have called the call center again today and a Lady named Fikile took my call and confirmed the issue was escalated on the 31st October, she is not sure why it has not been fixed yet. She promised to escalate again and when I insisted that I speak to a manager she informed me that her manager is on leave. When I asked to speak to another manager, I was put on hold for 28 minutes till I gave up and hung up. So it seems DSTV **** about the discount just to get me to come back. They only honored the deal for one out of 3 months and are sending me from pillar to post instead of fixing the issue.