Not good enough

I purchased a Fitbit Flex on the 2nd of March 2015, and returned it to Dion Wired 2 months later (1st of May 2014), because it does not charge, I explained to Pretty that I cannot be without my Fitbit for long, reason being I am on a training schedule which is regulated by my medical aid, and I have to log my progress digitally to benefit financially. I was promised feedback on the 4th of May 2015, or first thing today. I called in this afternoon since I did not get the promised feedback call. Pamela could not tell me when the supplier would collect the Fitbit, or how long it will be before I will know whether I can get a replacement, or my own device back in working order. I urgently need a clarity, I am dependant on the product and severely inconvenienced.