Hello Deepak KumarChaudhary,
Thank you for posting in Microsoft Community forum.
We are a community, and I am sorry that the telephone business is not of our scope.
Have any Microsoft engineers contacted you? If so, you go ahead and contact the engineer or his manager who took over the case. If no one has contacted you, it is recommended that you can also try to contact the engineer who helped you opened the case.
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou