Reliance Digital — hp pavilion laptop

I purchased a hp laptop model 15 cs100tx and serial number 5cd8490ywh on 15 august 2020 from reliance digital selaiyur, chennai, tamil nadu. I have a prbm in my laptop. It frequently gets hanged and most of time it shows not repsonding. Regarding this i tried many times to contact hp customer care from 18 august 2020. And i came to know tat the system is out of warranty. I have waited for more than 1 month to update my warranty from reliance digital. Very poor response from the reliance digital center. I have visited the reliance selaiyur branch still no response from them.
I have paid rs. 59811 for this laptop. I m asking for repayment. They are not responding.
Help me in this regard