Totem bike damaged

On 05/09/15 I purchased a totem bicycle from Makro Springfield. Less than 2 weeks later while riding the bike for only the 2nd time the chain slipped off and would not go back on. After closer inspection it was noted that on of the gears was damaged. So I returned the bike to the store when I had time which was 24/09/15. After booking the bike in which I understand has to be done for the supplier to assess I was informed that I would have an answer in 10 days. I received a message on 02/10/15 to inform me that the supplier had the bike. On 10/10/15 I contacted the store to find out what was happening and was informed that I would receive a call on 12/10/15 which did not happen. On 13/10/15 I called again and was informed that that same day I would receive I phone call back which I still have not gotten. This morning I phoned again and was on hold to speak to the ladies in repairs for over 10 minutes before my call was cut. I am extremely unhappy and I want my money back because that is clearly a manufacturing fault and the fact that I have not received any feedback is unacceptable.