Bad customer service

Last year July I bought black skullcandy earphones the ones with the mic for R400. Beginning of this year one side stopped working unexpectedly. So I went back to Incredible Connections Eastgate where I originally bought the earphones. I explained to them that I have a problem with my earphones and that I lost my proof of purchase. They told me that it is a common problem for skullcandy earphones to stop working one side, unfortunately they cannot help me since I lost the slip. I asked them to check through their records because I bought them using my bank card and the manager said I should try and get a bank statement. The time was after 5pm and when I went to the atm for statements I could only get a six months bank statement of which it won't help me. So I went back to store and explained that to them, they told me there is a new system which is confused to them and they can't use it to check the records and so they can't help me. I got irritated and I was disappointed how the employed staff including their manager can be so *********** and let an unhappy customer leave like that. They didn't even try to help me whatsoever they were busy attending white people's queries and I stood there for 30minutes thinking to myself that am being taken for granted and treated unfairly. This other guy came to me and said that I should go to the supplier(skullcandy) and I told him I had already went to them but they said I should go where I bought the earphones. They were saying to me without the proof of payment they cannot help me and I said to them I understand that but they should check through their records because it's not even a year since I bought the earphones. They said they cannot use the new system it confusing to them and so I went without being help. I'm writing this complaint because I'm one person who believes in buying original products from the stores because I know when something like this happens am covered, Incredible Connections Eastgate completely changed my perspective of that am really disappointed in them, they didn't even try to help me. Buying expensive skullcandy earphones I thought it was a good thing and expected them to last me for some time and they failed to even last me for one year and I lost my R400 like that.