Tech Mahindra — Please provide login details to attend test

I was tried registering for Tech Mahindra Drive for Associate Software Engineer on[protected]. But after entering all the details, it is shown that "i am not eligible".
When i tried it once again it is shown that "You are already registered. Please login with your registration ID and PIN to complete/view registration." Though i tried with different mail ID, but the same problem existed.

On[protected] i got a mail, for "Tech Mahindra Fresher Assessment". But, without the Login details i cannot attend the exam. So, solve my issue as soon as possible by that i can complete my exam.

Thanks and Regards

Prabhath