HP India — HP Case no. [protected], Laptop not working from almost 1 month

HP Laptop in warranty not getting repaired since almost 1 month in Bangalore,

The HP Technician Ramesh visited 3 times & told he will repair it soon, changed motherboard then told HDD faulty, & commited that he will replace it in 2 days, but its been more then a week, he has not came back yet & not receiving phone too, & my laptop is down since almost 1 month now,

HP Case no. [protected], the customer care also just tells that they are escalating to higher authorities to get it resolved, but nothing happens.

I had bought HP laptop considering it to be a good brand, but the after sale service is really frustrating.