Account handed over despite our arrangement

I am so disappointing in how African Bank conducts business. I took a loan with them and subsequently i was retrenched from my job, I was unable to service my debt as a result. But when I started working I made arrangements on line to resume payments towards my debt which was accepted as they started with the debit order. To my surprise a couple of months down the line I was shocked to receive a call from lawyers informing me that my account was handed over and that the balance was now almost twice the amount i saw on my African Bank statement. I was able to furnish them with bank statement to show them that i was already paying the account with African Bank and that I had an arrangement to pay them directly, a week later the lawyers informed me that they will stop with the case and i can just continue paying African Bank directly. Now today, I called African Bank requesting for a settlement figure for my loan but I was again told that I was handed over to another law firm. What the hell is going on here? Why would you hand me over again whilst still paying monthly? Are you and your lawyers trying to milk every cent from your struggling clients? this is day light *******!!!