Paying for a phone that i only used for 4 months

I bought a phone in Nov and it started running app on a background and i asked them to look into it as it was still under warranty , it has been a painful experience , they took my phone on the 10th April since then no communication whatsoever , I contacted them last week and the consultant rudely answered me that i should be patient, I then took it upon myself to track the repair company to my surprise they have sent the quote to Blue Label connect on the 24th April and till to date they haven't heard anything from them , Blue Connect on the other hand is saying something else, yesterday they debited their contract fee of R500 however they failing to give me a new phone or pay for the repair, all the managers from Blue Label Connect are forever busy when i request to speak to one of them☹☹☹☹☹