Consumer Redressal

I had purchased a Lenovo Laptop on 23rd Jan 2014. Since July 2014 (still under warranty period) it is facing technical issue (screen touch stops functioning intermittently). The service center (Digital Care Pvt. Ltd.) though acknowledged the issue however, unable to locate the error. Because of repeated technical problem, I had raised the issue with the Lenovo directly. Had exchanged multiple mails and Lenovo promised to attend the technical problem by sending their technical experts however, now they have stopped responding to my mail and neither call me back. Had sent mails to "lencare@lenovo.com", "conumerts@lenovo.com, "services_ed@lenovo.com" and "emailob@lenovo.com". No one at the lenovo is now attending to the technical problem inspite of repeated promises over mail and call to attend the same. Request your assistance in getting the same resolved as all my emails, requests are not given due consideration though the product is completely covered under the warranty period.