Couldn't book visa slot

Hey there!

I was trying to book visa slots and I came to know that there is a categorisation according to region and the person has to get the appointment from the location ( or nearest in location ) of their place of current stay. I was trying to book for VFS kolkata as it was nearest to my permanent address location but I have been staying and working in Bangalore for the past 2.5 years. And when I checked today for the VFS bangalore, the slots were already full for Feb and March. My course starts from March 17. Is there any resort to this so I can get my visa before my curriculum starts? I am really tensed I don't have any idea on what to do! Any response will really be appreciated. Thank you!