pathetic customer service

I bought a fridge from Hificorp Woodmead and also bought the extended warranty. the fridge kept on breaking. This time they cannot fix it and said there are no parts. The sales manager asked me to come and choose a new fridge to replace the 1 that keeps breaking. At the time that I bought the fridge I had my built in cupboards custom made to fit the fridge that I purchased from hifi corp. So when I got to the store yesterday there is only 1 fridge that they have which will fit in my kitchen unit but there is now a price difference of R3k so I asked the sales manager to negotiate the price. the sales manager called the store manage SHOBA. she said that she cannot give me more then a R500 discount as it will be below her cost price. I asked her not to lie and to please comedown on the price as it is not my fault that the fridge cannot be repaired. I explained that my cupboards were designed for a specific size of fridge. she did not care and said that they do not sell things with the intention of it breaking. She refused to help so I asked her to refund my money. she told me that she cannot refund my money from her store. she said that her finance department is closed and that I would need to return the fridge 1st and then she would put in a request for the refund. so I will be without a fridge and the money to buy a fridge over the holidays. she also said that she does not know how long I would have to wait. she then turned around and walked away while we were still speaking. I called her back and she did not care. this store manager SHOBA has zero respect for customers, poor customer service and a don't care attitude. I also do not believe that a finance department can be closed over the most busiest period of business. I do not mind that I cannot get the fridge that I wanted but what I do mind is that she threatened to leave me without a fridge and without the money to purchase a new 1 from another store.