Worst customer service ever

I purchased a double deep fryer on credit at HOMECHOICE over a 6 month repayment period. 3 months later the one side stopped working and 2 months thereafter the whole fryer was broken. I contacted HOMECHOICE complained and was told my dryer will be replace. I returned it and after 2 months of waiting I received no feedback. I called several times and after 3 months the broken fryer was sent to me again. I called and returned same thing happened and I sent it back again same thing the 3rd time keeping in mind I have to wait almost 2 months and only after consistent calling and complaining am I helped. When asked to talk to managers they never available and at times agents are rude. I went back to head office and said I want a refund this was agreed and today a month later no feedback. I refuse to pay my account until I'm helped but HOMECHOICE doesn't care. Their debt collectors call me to make payment but nothing is said about my issue. When I call sometimes the agents put me on hold for longer than 6 mins I'm disgusted