Fastrack — my watch was not working

Address:	Medak, Andhra Pradesh, 502335
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I was byed fastrack watch in that analog watches r there..in that two clocks one is working and 2nd one is not working after 4 days.. And i already showed in fastrack service centre he changed the battery and gived to me, at that time its worked.. After 2 days it again repeating the problem.. I never expect from the fastrack these kind of issues but iam facing the problem.. What should i doo