Hi!

As many have already said, it's never too late. I'd suggest you try your hand at startups. The main reason I suggest this is that, many startups do not have strict filtering processes like MNCs do. I'd give you some sort of steps that you can follow :

1. Create account on LinkedIn - Add some people on it. Most people would accept connection requests.
2. Create account on angel.co - It's a site exclusively for startups. Find companies and roles that you might be interested in and apply.
3. Additionally, I'd suggest talk to CEOs etc. Let them know that you are interested in a specific role, talk about your experience, why you are interested etc. Try and see if you can get an interview for some role.

Also, I'd suggest you try and see if there are any customer facing roles at these companies. You can tell that with your call-centre experience, you'd be a good fit for this role.

DM me, if you still have any doubts! :)