Union Bank Of India — S.B.Account [protected] Blocked

I had taken a loan of Rs.19, 50, 000 from the Chandra Layout Branch
in 2009 for 15 years. The account was later transferred to Basaveshwara Nagar Branch. I had been paying well in advance and I had cleared the amount and the amount pending was around Rs.48, 000/- as on 29th July 2022.
I got a call from the number [protected] on 29th July 2022 at 4.19 P.M claiming to be the Chief Manager of Basaveshwara Nagar Branch o[censored]nion Bank of India,
later confirmed as Sreenu M on 30th April 2022.
He asked me to pay 19, 000/- immediately or he will dub the loan account as
NPA, which he eventually did, thereby blocking my S.B.Account [protected] in Vijayanagar Branch.
He was not able to the exact amount of the pending amount to my representative and made her intentionally pay Rs.47, 000 and then Rs.1000. in cash
for which I have the challan.
I got an SMS from the bank acknowledging the payment of Rs 46250 an 1000.
I called the person who did not give me a proper explanation.
It is really annoying to deal with such inefficient and arrogant staff who are
not even capable of giving proper explanation nor do they have proper communication skills.
I have cleared the entire loan amount on 30th July 2022, even though the tenure ends only in 2024. Further, I request you to give me a detailed statement of the entire transaction from the first day, which in spite of my repeated requests was unheard.
If there is any change in the tenure, I had to be intimated, which is not,
as the person who called me was not aware of any procedures and he contacted one Mr. Suresh, who was equally ignorant and arrogant.
The person obviously seemed to be a mischief maker or ignorant of the procedure, both dangerous for money transactions.
Moreover, blocking my SB Account without any intimation is illegal.
I have not received any other communication about the Home Loan Account except the I request you to give me a copy of any correspondence regarding the same.
I have requested for the original documents which I had submitted for the mortgage.
He is not clear and asked me to go to some other branch which I refused and asked him to get it.
In spite of my various attempts to unblock my account, it is not happening.
Your customer care representative, Swarna took all the details about me which took several minutes without any fruitful result. I wish you had scanned your staff half of this, you would have employed better people to serve better.