Anna University — Unable to attend online exam due to technical issues

I'm unable to attend the online exam (Optical Communication - EC8751) held on[protected].00-11.00am) due to technical issues in the SEB software. I also contacted helpdesk and registered my complaint. And also informed in college. I was expecting for re-exam. But in result, it is marked as absent (UA RA). I kindly request anna university to recheck my result and give another chance for taking up the exam(re-exam).