Dell India Private Limited - Not replacing product

I purchase dell laptop inspiron **** in a date of **-march-****, which is in warranty till now. The problem is the laptop speakers are not working well this makes scattering sound. The company changes the speakers * times before but the same issue happens now. That's why I call to dell india customer care center and talk about the issue i said him that the issue happen many time this will waste my time and money, i want replace my product or my money back. But the company's Escalations team member mrs. Himanshu bhatiya says that we can not replace system we only change speakers. I want the replacement because the issue happens many time till now but he can not find solution for that issue Please help me.