Bad service ever

I bought a generator on my account at home choice but in the 3 months that I had the item there was something faulty so I took it back to them, and its been 7 months since I haven't received anything from them I must keep on calling after them and the call center would just keep me on hold until my airtime is finished and wouldn't call me back. I am paying on a item that they refuse to fix or replace. I am so unhappy because they expect me to also pay a repair fee without letting me know what is really wrong with it and apparently the item don't have warranty.