shocking service rendered

having had endless issues with a fitbit device bought from dischem gateway, ive been told to consult fitbit directly even though my device is under 4 months old. this has been my 3rd exchange and now the branch does not want to resolve my issue despite me saying i will purchase another device whilst waiting for my refund to clear. the store does not want to take in my device apparently under new rules which they don't understand. the device cost R4000 rand. customer service is thrown out the window, shocking service despite being assured they will gladly sort out any issues when i picked up my device.