i will suggest you one thing only if you want to join call
center you just require excellent communication skill
because call center needs only the person who are good
communicator.you need to learn English speaking perfectly in
case u want to join international call center.domestic call
center also available for whom who know local language such
as   Hindi,Marathi,Gujarati,and others

Hi there! i am shahjaha.Raghu remember this thing that 
nobody is perfect if u want to join call centre you should 
put some efforts to improve ur english (Himatey marda 
madate Khuda).

Dont worry Raghu.Im same to u but I have the 
confident.Remember it most of our respectable person like 
Rabindronath tagor,Bilgets and Kaji Najrul Islam and many 
of them r not very litterate.But they have the main power 
which is his or her confident and creativity.So they 
achived the honorable post.So u can.I pray for u. U 
can...there is nothing else which man cant solve.Best of 
luck.