complaint about cashier of indian Bank B.B. KULAM MADURAI

I AM HAVING S.B.ACCOUNT NO.XXXXX174 WITH MY FAMILY MEMBERS 2 S.B. ACCOUNTS WITH YOUR B.B. KULAM BRANCH MADURAI. TODAY 15.05.2024 I WROTE 3 CHALLANS EACH RS.500/- AND REQUESTED MY SISTER TO REMIT IN THE CASH COUNTER SINGLE WIDOW OPERATOR MR. PRAKASH .MY SISTER GAVE 3 CHALLANS TO THE CASHIER. HE SHOUTED AT MY SISTER AND THROW THE CHALLANS AND TOLD TO GIVE ONE BY ONE. HE SHOUTED TOWARDS MY SISTER CALLING SINGULARLY COME AND GO. HER AGE IS 63 SENIOR CITIZEN. I ASKED HIM NOT TO TELL WITHOUT RESPECT SINGULARLY TOWARDS CUSTOMERS. HE AGAIN AND AGAIN HE CALLED ME SINGULARLY VAA AND POO IN TAMIL. HE AGAIN AND AGAIN RETURNED THE CHALLANS TO FILL FREQUENTLY..I AM A SENIOR CITIZEN AGED 67 YEARS.LAST YEAR ALSO THIS SAME INCIDENT OCCURED WITH THIS SAME PERSON. I SENT E MAILS TO YOUR HEAD OFFICE AND REGIONAL OFFICE , MADURAI BUT NO REPLY. ALWAYS HE IS SPEAKING VERY ANGRILY TOWARDS CUSTOMERS PLEASE NOTE IN THE CCTV CAMERA. AT ONCE TODAY I LODGE A COMPLAINT WITH YOUR MANAGER OF B.B.KULAM BRANCH MADURAI ORALLY. HE POLITELY TOLD TO ADVISE THE STAFF MEMBER SUITABLY. THE ACTION OF THE MANAGER IS VERY CORDIAL.I AM HAVING MENTAL AGONY FOR HIS IRRESPECTIVE SPEECH TOWARDS ME. HIS ATTITUDE IS ALWAYS ANGRILLY TOWARDS CUSTOMERS.IS IT CORRECT.