Demand due intimation order due to IT Dept processing error.

My ITR for AY 2024-25 got processed with demand due. In the intimation order in Sep 2024, TDS on my salary for last quarter is missing. Due to this, demand is coming up. 

In form 26AS, TDS entry for last quarter is present. So, clearly the issue is in IT dept. processing.

When I contacted their support, they gave me 2 options:

1. Submit revised return - Last date is 31 Dec 2024

2. Raise rectification request

He mentioned that it will be better if I go ahead with option 1.

I had raised a grievance few days back for this issue.

What should I do now?

Thanks in advance!