See every year quite a good amount of call centre representatives are hired after the 12th. Now for that you need have a good speaking skills in the language required. The call centre jobs are mainly training based, so with time the salary will increase. As a fresher, you can expect a salary of around Rs. 15k and the salary amount may increase depending on the overtimes and night shifts you do.

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