My guess watch went for service 2 - 3 months back and no proper feedback

On the 26th of August 2016 i bought a new guess watch at guess store in gateway mall. however my watch kept losing time so i decided to sent it back where i bought it so they can have a look at it because it was under warranty, so around August this year i sent the watch and they told me it would take 2 - 3 weeks to sortout and so i waited and yes they did let me know when it had arrived. when i got there and saw the watch, it looked totally different and i told them that this wasnt my watch they had to take it back to joburg and told me it would only take two weeks for it to return. but i havent received my watch until today. No feedback im getting from them i had to go there myself and ask them what happening but they only keep promising that it will come. last week friday i spoke to one lady and she said hopely it will come this week and again i went there today to check...Nothing...im getting irratated now. please see into this...store managers name is Nathi Contact number is ********** 282.