As per the top online recruitment platforms, there are promotions after being a Call centre executive. After being a Call Centre executive you will be promoted to be a lead caller. This promotion may take 7-8 years of time. You can drop the time period by performing best among your team. After being lead caller you can get promoted to Supervisor. After being supervisor you can become manager and finally from Manager you can become Director. Although this procedure is entirely dependent on your performance. If you perform well then you really have a good career ahead.

I hope this answer helps. All the very best for your future endeavors!