Punjab National Bank [PNB] — Pension of my Mother Mrs Minoti Mukherjee not remitted since Nov.21

Address:

Punjab National Bank , 73 Diamond Harbour Road , Kidderpore , Kolkata -700073 .

My Mother Mrs Minoti Mukherjee is a Pension holder and went to PNB to provide the Biometric test and also submitted the manual life certificate for getting her pension from Punjab national Bank, kidderpore Branch, 73 Diamond Harbour Road, Kolkata 700023. Her Pension has been stopped since November 2021.
Her customer Id is[protected]. Her Pension she has been receiving for last 20 years .

Please let us know the reason of stopping her Pension aged 84 years of a female who has worked for so many years in a West Bengal Govt department.