HP India — Laptop is not working properly

From the last one week my laptop is not working fine.i tried lot of customer care number but they are not responding properly
then i directly called to madurai hp serivice centre and told about the complaint but they are simply telling you raise complaint in toll free number and cut the call.my laptop is in under warrenty.when the time of purhase they told any problem onsite warranty is their but here nothing like that..i am totally disappointed.