I bought two watches from Rivoli Mall of the Emira...

I bought two watches from Rivoli Mall of the Emirates branch 2 months ago, as a gift to my father, But unfortunately, before i send it to him, Its not working anymore. Even though I didn't move it from it's box, i just found out that it's not working anymore(BOUGHT BRANDNEW BUT DEFECTIVE ALREADY). And today, the watch i bought for myself same time that i bought the other watch, is not working either. I cannot believe that i bought brand new watches and will face this trouble within 2 months of purchase. I was having high expectation from this shop but unfortunately disappointed me only.