Bad bad customer service !

I bought a Hisense fridge/freezer from Fair Price in Brits ****rweg str Branch and lost my prove of purchase and now they're telling me they can't help me to get a reprint for the purchase I made even thought I payed it with my bank card and got the date of purchase ... The manageres I spoke to told me in a rude manner that the bank and Fair Price has to different systems and they can't help me like that now I had a similar incident with Game Stores over 2 years ago and they assisted me with my issue and we got it sorted when I emailed them prove of payment from my bank statements why can't Fair Price help me? ... I also emailed Fair Price head office to try and get assistance from them with no luck I lost all my food in the Freezer already since it broke down on Friday already and I went to see them and yeah that was as far as I got ... My Hisense fridge/freezer is still under guarantee at Hisense also as I only bought it over a year ago and it has 3 years guarantee...

The customer service I received when I went to talk to them wasn't good at all it was really bad even from head office side.