Financial harresment by phone calls and emails financial hooliganism

I send this today on behalf of my father. we are paying every month the promissed amount without any gap but we never got physical BILL statement. Only we used to get an sms , some times call to customer care. we were always infomed what we trusted. but its a clear case of HOOLIGANISM TRICKS BY BANK. Dear sir There is dispute over the payment SMS due for payment dated 24 august 2017 was Rs20848/- through call centre the lady informed me that if you pay Rs.8150/- then you can pay 12th month equal instalment later on thru SMS started payment of Rs1050/- may be that is Rs 1058/-i have to check out later on, 1. Rs 8150/- paid on 10th sept 2017 2 Rs.1050/- paid on 5th oct 2017 3 Rs 1060/- paid on 8th nov 2017 4. Rs 1050/- paid on 7 th dec 2017 5 Rs.1050/- paid on 8 th jan 2018 During continue all and SMS there was a man from kotak bank name Mr mukesh mob no, [deleted] came to my house and said i will collect the payment and insure payment is credited to your credit card no .......1944. 6. Rs 1060/- paid on 5th feb 2018. paid to Mr mukesh all these above payment made through HDFC bank cheque,all above money debited from my account. Mr Mukesh later came to me and told that your money is not credited to your account due to shortage of Rs 600/- cash however payment confirm on mob ref no.MB [deleted] on dated 17 th feb 2018. I told Mr Mukesh that i am not happy with kotk bank affair kindly arrange to settle the account as full and final i am ready to pay back balance amount. however later on i called mukesh to collect the cheque emi Mr Mukesh told me that we are getting approval for settlement so hold on to pay. Mr Mukesh later on came with offer to pay Rs8300/- i asked him balance is remain to pay Rs6000/-appx then why should i pay more this offer is not acceptable to me. 7. Rs1060/- cheque dated 8 th march 2018 paid on 22 nd march 2018 hold due to settlement. kindly sent me information details the above payment deducted from my account why not credited to my credit account. why i am getting calls that i have not paid the money even yesterday there was a call from lady ms Parvati 2 mob no [deleted] used bad language as you are drunk like i shot back and close the mob this short of language at kotak bank i do not have to go into more detail I am 68 years . kindly settle the account how much balance amount is remain to be paid if found correct I will immediately pay. twitter link hope you may pay attention. yours truely NAME credit card no ending 1944 mob XXXXXXXXXX