Twisp Edge refund

On 07 Nov 2015 I bought the Edge at the Centurion Mall outlet but returned it on 08 Nov 2015 as the device was faulty. The sales assistant tried to replace some of the parts but I stopped him asking my money back. The response was that refunds only happen at H O. I gave my details and waited for the refund, contacting Twisp HO on 10 Nov 2015. I had to ask for feedback twice before they came back to me only stating that the refund had been loaded for the Friday not specifying the amount. <br> The refund was made but to the value of R 425, R 375 less than I paid for the device. According to them the difference was a \fair usage and handling fee"?????<br> <br> I then sent them the following extract from the consumer protection act:<br> Consumers are permitted to return goods to suppliers"