Not receiving what orderd and no responce

I have been with teljoy for almost 2 years now and make use of the 6 month upgrade option then your contract starts over again January i did upgrade to lg smart tv and was told by agent it comes with camera i asked for tv with it to use on skype as i work from home a lot received my tv and no camera so i kept the tv because it had realy good picture but was discused as i pay R1000 pm for my tv and not what i orderd. so last week i upgraded again orderd from theire web site ashured samsung got camera so received new tv and guess no camera again so i conected the tv at home and im very un happy the tvs picture is realy bad so i phoned in to teljoy to cancell this tv becaused they **** again over camera i wanted my tv back i had or change this one we received for something els but was adviced i have to wait 6 months again after i phoned them 2 hours after it was delevired to say i do not want this tv not what i orderd and the picture quality is pathetic. Second time teljoy cathes me like this. I dont mind the instalment just feel the cating us. Cunsumer law says you can send back in 7 days but teljoy dont even fix theire mistake in 2 hours cartblance and huisgenoot here i come