Allahabad Bank — Staff misbehaved with an old lady

Sir my grandmother is 85 years old. Har pensioner account is ine bulandshahar allahabad bank. Due to corona she went to aligarh allahabad bank to get pension where the branch manager refused to give pension even though she had multi city cheque book and aadhar card. Branch manager told her that go to bulandshahar allahabad bank to bring your pension and miss behave with an old lady. He is doing like this from last six months. She is not having a single penny because she didn't get her pension from last six month. Please take strict action against him. And please allow my grandmother to take her pension from aligarh allahabad bank. Thank you