Customer care that is not customer friendly

I brought a fridge about 3 or 4 years back at Midrand Game Store. Since then I have misplaced the purchase slip. I went to Game waterfall to inquire and I was told to inquire at Midrand, and they should be able to locate my slip easily if i had it delivered, which was the case. At Midrand, I was assisted by a woman who was in a rush to knock off, telling me that they need last 4 digits of my bank card, bank invoice which shows transaction and date of purchase. Explained to her that I'm not sure about the exact date and she told me there is nothing she can do for me. Called the inquiry and was told the same thing too. I'm a customer, I expect some sort of assistance with the matter and not to be told that without the date of purchase no one can help me. I work in an IT industry and surely transactions are archived in a database somewhere. Customer service is there to make an effort to help the customer and not merely dismiss them when asking for help. I'm now expected to go to the back and request 2 years worth of statements to locate the purchase while customer care simply aren't willing to assist me get my fridge repaired. I received better customer service from Makro when my washing machine was faulty 6 month after buying it without producing the original receipt. I guess I know which store to avoid buying appliance in future.