Punjab National Bank [PNB] — extra tds rs 37354 deducted on arrear 21000 when tax slab is 5 percent

As per trailer mail bank Deduct Extra TDS RS. 37534 on OROP pension Arrears Rs 201000 which is not as per Indian Government Income Tax Slab on Year 2017 -18 which is 5%.
You are requested Refund or credit Extra TDS which is deduct by B

First of all PNB was not giving me my pension as per OROP. After one year correspondence PNB credit me as Arrear Rs.20, 1000 which is From 01 July 2014 to 01 Oct 2017.

PNB counted this earning of yearly income of 2017 and TDS deducted Rs. 37273 + 261 which is unfavourable as per tax slabe is 5%.
In the year July 2014 to Dec 2015 my basic pension is as per OROP RS.8925 + 113 %DA which is not coming in TAX Slab.
In the year Jan 2016 to Dec 2016 my basic pension is as per 7 pay commission RS. 22938 which is not coming in TAX Slab.
In the year Jan 2016 to Dec 2016 my basic pension is as per 7 pay commission RS. 24324 which is not coming in TAX Slab.
As per tax slabe 2016-17 On Income up to 500000 is 5 %.
I have also taken personal loan from PNB on pension Rs. 20000. The instilment of bank is RS7000 per month is debit BY PNB.
I do not understand that this mistake has been done by PNB and I am suffering.
You are requested take this matter seriously and priority basis and refund TDS on my account.
Vivkek Kumar Sharma A/c no [protected] PNB Branch Gowan Disst Sambhal (UP) IFC Code PUN 1908.