About selling of defective tablet

i got a defective tablet z992g imei:911222854124003 of zync compny bought threw homeshop 18
order no.:#925894615 , order date:24 may 2013
after knowing its fault on the second day of gatting delevary i told them about the problem & sent it to compny threw its service center in ahamdabad in gujarat but there is not any sollution after one & half munth from the date of given the tablet to service center
now they told me that there is no replacement
they give one year warranty