Standard bank are **********

I had a cheque account with standard bank years back, i then decided not to use an account anymore, i did not close it, then it was handed over to the attorneys because they said it had accumulated arrears or interest, i made an arrangement with the attorneys, years down the line i got a call from another attorneys that they are now handling an account, i continued wit paying, but the balance did not decrease, when i asked about this i was told that it was standard bank, the handed over amount to was the same as it was handed over to the 1st attorneys, when i asked the 2nd attorneys about it they said it was standard bank, i contacted the 1st attorneys and they told me that the account is no longer with them, i contacted standard bank requesting the statement , i was told that i must pay, i contacted hello peter regarding this account but still i was not helped. i continued paying this account whit sore heart, meaning that i must pay it until i die, now lately i get calls from standard bank telling me that i owe an account and i must pay, i asked the lady who called me why must i pay because according to me i have paid more than what owed to this account, she could not give me straight answers, why am getting calls from standard bank? what happened to the money i have paid from 2014 till date? why is standard bank harassing me like this? must i die then you will be happy? I hate this bank with all my heart, i am not going to pay for something i paid for years