bad service

I bought a fridge in September 2014 it broke in December 2014 I waited for someone to come and fix up until now this hasn't happened. I misplaced the receipt but it was bought on account and I'm pretty sure this can be replaced by the information on the computer because it is not that long ago. They continuously giving us the run around and this is outright annoying. A guy from defy finally came a month ago and still no sign of anyone fixing the fridge. We are paying this fridge off monthly and have not enjoyed using this fridge since December 2014. This is unacceptable. We are loyal customers and never skip a payment when our payments are due. The guys at the back in the appliance side are not at all helpful they act like they don't know anything. I think this is bad customer service. They