Samsung Galaxy 4 watch battery fault

Since last year my watch has been repaired more than 4 times. As I write this e-mail it has been at Menlyn Vodacom repairs from 9 May till now. Battery does not last full day. I use it for email, SMS, calls, what sup. Repairs said they have replaced new battery then new parts, then they said they replaced with what they say is new watch but still experiencing the same problem. First repair was returned in less than 24hours, no questions asked about usage, no observation. Second time they said they have replaced with new battery, then they said they replaced new parts and new battery. Then when they replaced it with new watch the consultant who was doing settings said all repaired watch comes back wrapped., which means it is not new watch. To them is new watch. No change, no difference watch has less power. Now they say they are still waiting for parts. I even took pictures of when it was full- and the-time battery was flat. To my surprise Samsung phoned me and they enquired how was my watch after repair. The guy didn't even know records of repairs but continued to say I don't qualify for new watch after I mentioned it will be best to replace it with new watch. Even now is almost a year with contract payment and no usage of my watch. To them the watch is 100% functional. Tried to cancel contract I was told I need to pay penalty fees. Am paying, my money is not broken but am paying for something that is not functional. No one knows more about the watch. TILL NOW AM STILL PAYIN AND THE WATCH IS AT THE REPAIR CENTER. I bought watch and phone for a reason.