Pathetic service delivery

I've been a dstv customer for 8 years now and I've never experienced such bad service delivery before I am absolutely angry at their service delivery....at the end of August our contract for the price lock had expired so I've renewed the contract on the 7th of September we had the ultra pvr installed ever since the decoder has been troublesome when you switch it on there no sound or no picture I've called the call centre 10 times in total been to multichoice twice and they say nothing is wrong with the decoder I should buy a new HDMI cable but this one is brand new I've been cut off twice with no calls nothing from them for being in arrears when the account was never in arrears every morning is a different issue in order to get services we have to pull out the power plug we have 3 pvr and we call multichoice more than we watch TV which is so unfair every 2 days I have to call them airtime isn't cheap and the dstv in the chatsworth centre is so useless they behave as if they doing us a favor and not doing their jobs the attitude is pathetic i have told them to cancel this contract because I'm not happy at all I've sent numourous emails no one has rep****.... For this bad service I will never recommend dstv to anyone rather buy the TV box if they don't have a smart TV and use Netflix or open view much better services than this and we pay so much to watch repeats which is suck a joke!