Yono Rummy Reviews Read Customer Service Reviews ofSBI Personal Loan postal service. Another way to have your concerns addressed is to send it in writing. You can write to the customer service department of SBI at the following address: Customer Service Department. State Bank of India. State Bank Bhavan, 16th floor. Madam Cama Road. Mumbai 400 021. Fax: 022 22742431. Tel: 022 22024456