The worst customer service I've ever experienced

My Explora decoder started malfunctioning two weeks ago. On Tuesday, I tried taking the decoder to an Ontdekkers dstv office, but they claimed to have been hit by lightning (they made the same claim last year as well - VERY unlucky location, obviously). When they turned me away, I tried the Voortrekker branch, but they were out ot stock. I then phoned the Randburg walk-in centre and was assured they had stock available. At this point, I had no choice but to take leave for the day. I drove to Randburg (a 30 min drive), waited in the queue for a considerable amount of time, only to find out when I was finally assisted, that the Randburg branch did NOT have stock available. I specifically phoned ahead! I was then told to wait until 12 for stock to arrive. At 10 to 12, I was informed that the stock would only arrive 40 minutes later. I finally received a 'fixed' decoder at 13:15 (I pay monthly insurance). When I got home, the replacement decoder would not communicate with my extra view-decoders. FIVE phone calls and 12 hours later, they finally worked. One day later, the replacement Explora gave me an error message that the hard drive was scrambled. At this point, I was put through to the Insurance department, that approved a claim for a new Explora. I was told they would try to have the installer at my home by Friday. The company finally turned up after 2pm on Saturday, and installed the new Explora. Lo and behold, this morning NONE of the three decoders are working, nor is my TV attached to the Explora. I spoke to a call centre agent (again!) at 08:05 this morning, and he promised to call me at 09:00 again. He called at 09:15, but the phone cut out, and he didn't call back. I then called again, just to be transferred to the insurance division, which isn't open today. I haven't been able to record anything in 2 weeks, and I have had almost no service. I'd love a refund, and to close my account, as I don't think Multichoice is capable of delivering the service I'm paying them for.