State Bank Of India [SBI] — usage of hindi which I don't know to communicate with me

I am a sbi chennai, tamil nadu customer. I understand only english and tamil in writing and speaking. For the past few months sbi uses only hindi to communicate with me regarding my atm transactions and account debit/credit plus other details which i dont understand. So i dont know whats going on with my account or what important information sbi is trying to inform me. Kindly take necessary action so that they communicate with me either in english or tamil which i understand.