DSTV stole my money

In February DSTV offered me a special, saying that if I pay 12 months in advance for my subscription, I only pay for 11 months and get 1 month free, plus they bill me at the old rates before the increases. I accepted the offer - they confirmed telefonically what the amount is that I should pay and confirmed that I will be paid up until 29 February 2016. So, nevertheless they cut me off the beginning of this month and I had to drive to their offices several times and stand in a long que every time, or called several times, for the past three weeks, only be be put back on air 2 days later and then the same happened again. So basically I have to explain my story every two days to somebody on the other side that simply dont care or dont understand. They said my subscription was not altered to yesrly and still on monthly. Who's problem is that if the operator I spoke to clearly did not do the job right?? How am I supposed to know how their systems work? I paid and I want the service I paid for!! How is DSTV going to reimburse me for all my petrol, tel costs, time away from work, and inconvenience not to use my own TV at home? Worst company ever, no-care staff and worst system!