Xiaomi India — MI notebook pro laptop issue

Given the laptop for service at the authorized service center for last 25 days. They have tried every possibility to resolve but they are unable to rectify the issue.
Demanded a product exchange since they are no other way to solve this problem. But I feel ignored when asked for an exchange.
No response regarding this from the technical backend.
Feel insulted & frustrated that everyday I have to call them asking about the issues and not getting any fruitful response.
No value for my time and money. Need urgent replacement.