Bangiya Gramin Vikash Bank — uncivilised behaviour of bm nepalgunge br

I am mrs ira bogi a bonafide customer of bgvb, nepalgunge br for about the last 20 yrs. My a/c no is[protected].
I submit form 15 g every yr in april and ask for an ack which is mostly denied. Later they dont feed it in their system and tds is charged on my int on deposits. When i complain against it they say i didnt submit 15 g and ask for a proof if i did which i dont have as they never issue.
On 12.10.17 i visited the branch at about 12.00 noon to make some term deposits. I was told that 15 g was not done in my cust id to which i said i submitted in apr2017. The same story went on and the person who receives 15 g (Named robin possibly) started shouting and directed me to the manager.
When i went to the manager he also stated in an extremely hostile manner shouting at the top of his voice that it is not at all customary for the bank to issue an acknowledgement against 15 g. This statement is highly unlawful.
I said i submitted. He said the bank may have lost your 15 g and not entered in the system. I protested against it. He said it is a very natural phenomenon for the bank to lose a document. I was stunned at this irresponsible statement. He added arrogantly that the the bank is not liable for your 15 g here and the onus of claiming back your tds amt from it is your headache. This is the second unlawful statement by the manager.
When i said i am not supposed to go through this process he said that he will throw us out of the bank if we talk such rubbish (Incidentally my brother who is a senior citizen had escorted me). We are no miscreants on whom he commented to apply physical might to kick us out. This is the third unlawful statement by the branch head.
I feel the bm is a disgrace to the banking industry.
He had the audacity to insult for no reason a respectable lady and my brother (Sr cit).
The most severe punishment should be imposed on him preferably dismissal if not sending him behind the bars because he is a menace to our society also.