Hello suraj silwal,
please check here to see if there is a in-person support center near you to assit you with this.
Find a participating Best Buy Service Center for in-person support in the US (microsoft.com)
Alternatively, you can contact online support:
- Please go to: https://support.microsoft.com/contactus# !
- Type in surface duo
- Press get help
- On the bottom click "contact support" or "sign in to contact support"
- From the drop lists select the items that apply and then you get a list of available options to get a support agent to contact you depending on your selected issue
Thank you,