Seeking Advice: Follow-Up After Being Selected in Cognizant Walk-In Drive

Hello everyone, need your advice here. I’m currently working as an Informatica PowerCenter Admin at TCS for the past 4 years, and I recently attended a Cognizant walk-in drive for the same role. I got selected and had a salary discussion with HR. HR mentioned they would send me an email regarding the next steps, but I still haven’t received any mail. I have followed up multiple times via LinkedIn and email, but there’s been no response so far. I’m considering visiting the Cognizant office directly to inquire about my status. Is it okay to approach the company in person like this, or should I just move on and start applying elsewhere? I would appreciate any suggestions or experiences you can share. Thanks in advance!