I dont have access to my mobile phone and email id. Now, how do I log in to my ATS account?

You cannot log in to your ATS account without having access to either of them. In this case, you have to change/modify your phone number and email address by printing and filling offline modification form (Download here) and sending the physical form to the following address:

ATS Share Brokers Pvt. Ltd. No. 648/A-3, 1st Floor, OM Chambers, Binnamangala, 1st Stage, Indiranagar Bangalore – 560038