Poor customer service

I bought earphones/ headphones at the Port Elizabeth Heugh Road Walmer branch on the 22nd of July. I had to return them to the store on the 6th of October as the left side was not working. They took them in for repairs and I was to get them back within 3 weeks. Around the 11th of October I called the store to follow up. The lady I spoke to said she was busy fighting with her Head Office regarding the delay in this and she would get back to me by end of day the following day. A week a two later after no call back I called the store again and spoke to Akhona who also promised to get back to me. We are now in December and I have yet to receive any feedback from the store and this is almost two months after they were sent for repairs. Good customer service entails giving customer interim feedback even if their query has not yet been resolved, at least keep me updated. At this point all I want is my money back they can keep their poor service and headphones.