State Bank of India — Not accepting other bank statement as address proof

Address:

Bangalore, Karnataka

I hold an account with SBI HAL branch.I went there to get my address changed. But the lady at the counter is refusing to take other banks statement and cover letter as address proof.She is going on giving some non sense reasons for the same.KYC clearly states that other bank certificates are accepted as address proof. I dont know what to do.how to convince this lady