Misleading salss

My husband was contacted about a month by one of your sales reps, he offered him a DStv decoder package that includes the decoder and a subscription to dstv that includes Netflix and showmax in it for R189. One week later the device was delivered to find its the decoder that we're already using. Only to find out just last week our DStv was subscription is unpaid. He called to find out could be the problem cuase it debt it's R189 only to find that the R189 is just for decoder and not the subscription, he then asked for this to be canceled and he was told he needed to cancel within 7days, if he wanted this to be canceled now he needs to pay over R6000 for the cancelation fee. I find this to be unfair, ******** and daylight rubbery. All we want is this nonsense package to be canceled and on air to take back the their device. After all that was sold to us was not what was PROMISED!!!!