Terrible customer service

Words can't even explain how disappointed and dissatisfied i am. After two weeks of purchasing a fridge from your online store, all i wanted to do was an exchange and pay in R1000 difference but no one is willing to assist me. Ive called, emailed and done everything I possibly could just to get through to you but with no luck. Ive used almost R500 on calls and emails to you guys but still no solution as you still have the goods and the money but I'm just a frustrated customer who doesn't even know where my money has gonne to. Please help me with my purchase pls!