Bad service and system issues

Edgars Mall@reds always has system issues. I don't understand why they never resolve their issues. Today I went in to exchange something that I bought at Edgars Centurion Mall but I was unable to. I was told that they have been struggling with exchanging items bought from other branches. They claim they have logged multiple calls to resolve this matter but nothing has been done. I am upset especially because I am a pregnant woman who went into the shop few minutes before being told all of the above. I was told to come back again if I was still in the mall. The cashier who was serving didn't tell me they had system issues regarding exchanging item. She saw the receipt, she was aware that I bought the item elsewhere. I wasted my time and energy, I wasn't assisted again. They are ridiculous. This brand has gone to the dogs for real.