Billed by DStv MultiChoice for Nothing

I made the biggest mistake by signing up for DStv internet package. The router was delivered on the 8th of June and it wasn't even working. I called they call center to inform them and I was informed I needed to pay for it to work which didn't make sense to me. I didn't even bother myself because I won't be paying for something thats not working. On the 22 June when checking my account I was shocked to discover I am owing R2449 for the month. I called the call center I was told I needed to pay that amount accumulated since the 2nd of June I asked for what because I received the router on the 8th it's not even working. The call center people do not know what's going on they just respond to I am sorry for your dissatisfaction. I am on the premium price lock for R900 I paid R1200 on the 26th of June. Still on my account there is a R2449 I still owe which was due on the on 28th which I still don't know what it is for. I took the router to they DSTV offices in Vereeniging on the 27th to return it. The people there reassured me my complain has been escalated to headoffice and should be resolved in not time. I was called today 29th to come back to they offices to come take the router it has now been fixed and working and that all is being fixed with my account. I just received a sms now from DStv that my subscription is going to be canceled if I don't pay the R2449. I am getting tired of going back and forth with DStv multichoice they can cancel all my subscriptions with them. They call center agents should be given proper trained because it seems they clueless of what's going on at MultiChoice.