Fitness Watch return and credit to my account pls

I purchased the wrist band fitness watch from Exact in N1 City, support from mobicel was awesome as it worked after much trouble via the software from the app store. Now the watch is not compatible with the Discovery App, the reason why I bought the fitness watch was not only to get fit but to accumulated much needed points. I only found out recently this watch not supported, so it is useless to me. I tried to take it back yesterday so Simone basically said no its like a cellphone. No it's not a cellphone its a fitness watch. I have dealt with many shops where they have taken back cellphone accessories with no problem, why are you guys any different. All I want is for you guys to take your watch back and credit my account so I can purchase a fitness watch that is compatible with the Discovery App. I know Keelan you have passed this on to the complaints department and area manager, just how long must I wait for a decision to be made?