Hello Venkata,
Sorry to hear about what had happened during your exam.
For the candidates who had experienced technical issues during the exam, this can only be rescheduled by Pearson VUE support as they are the one who have the access with the exam appointments. Please refer on the image below or visit About online exams with Pearson VUE for more information.

For immediate assistance from Pearson VUE, you may contact them directly using the information below:
https://home.pearsonvue.com/microsoft/contact
If this solves your problem, please indicate “Yes” to the question. If your inquiry was not fully resolved, please post a new question so we may continue in assisting you. This case will now be closed and locked.
Kind regards,