repairing the watch

i bought reebok watch from shopclues on 4th april order no 44772329 they delivered the watch on 10th april i paid for  watch but after 10days it is not working properly sometimes it stops suddenly n also the strap of the watch is not stitche well. the stiching is not proper so i request you to repair my watch or replace it as soon as possible my mob no is 9757137951 my address u will get from shopclues.com