Dstv a bunch of ******

I am so upset, i recently got a new explora and DSTV failed to advise me that I have to disconnect my other decoder and now they are saying I owe them R550 which no one advised me, when speaking to the call centre agent they advise me that i was supposed to use my common sense and disconnect the other one. How on earth is one who has never had an explora supposed to know this. Their call centre is useless with no resolution to this. We already paying so much more for DSTV the least they can do is offer sound advise.