State Bank Of India [SBI] — regarding surrender of locker

I ameth pensioner and have been using locker facility at sbi rajouri garden, new delhi (1705) since 1980. About a year and a half ago i permanently shifted to dehradun. On 16th aug. 2017 i went to delhi to surrender my locker with the key of the locker and letter duly signed by me and my wife (Co-hirer). While i operated the locker and removed all our belongings i was told that the locker could not be surrendered without the presence of my wife. I tried to reason out with the concerned staff and even the manager, but they behaved strangely without any sense of protocol or respect for a senior citizen. I had to come back to dehradun without surrendering the locker and i will have to keep paying the rent of the locker till i am able to go to delhi again without any apparent reason.