Bad customer service from GAME store at Mall@reds Centurion

I received a very bad customer service at GAME in Mall@reds Centurion today 15th of April. I was returning a TEAC radio that I bought at GAME at Mall@reds in centurion for R899.00 because its sound it not good. The lady from customer services refused to take the radio back. I had a slip too and it was inside the original box too. We touched the radio because we were increasing the volume but the sound was very weak, we tried for several days but the sound was still very weak. it is like you are playing radio from a cellphone. The customer lady just phoned the manager and told him that we touched the radio and the manager did not even come to inspect the radio himself. The GAME manager in Centurion just made a decision of not taking the radio back on telephone conversation.