Multichoice robs me of my money

I rented a movie on Saturday night around 22:45 with a agent from the call center. When i tried to view the movie the screen just gets stuck, tried for about an hour no luck, tried to call the call center but it was closed. On Sunday i called the call center to check what was wrong the person i spoke to said she send a complaint to box office and box office will call me in 2 hours times. I got no call from box office I then called the call center again spoke to a guy who now tells me that my signal is the problem I have been using my dstv explora with the same signal strength for the last 8 months no problems, so he ask me to rent an other movie to see what was the problem that didn't help, now i have 2 movies that i cant view after that i got very angry with the guy (he cut the call). I then called the center about 4