poor services and making money out struggling individuals

Disgusted with how nimble **** client in the name of we assist with an easy repayment , my account that I had with FASTA loan was handed over to this debt collection company and the amount owing on that account was 6000+ and when it was handed over to them because they added fees I was advised by the agent who called me from nimble R7460.80 and they will fix my repayment to 1500 per month so I can repay the 7460.80 to my surprise after doing payment before the reagreed date each month of R1500*2 +900 my balance does not decrease instated its increase so I spoke to them on whatsapp and on they chat box for someone to call and explain and no1 called and I would call them to inquire and I would be told someone will call back to explain and no one does until yesterday I called again and Spoke with GANDRE MOONIE who seemsed to not know whaty he was saying and can not puyt himself in a customers shoes , when I started asking question he decide to talk over me and raised his voice when I asked him to not raise his voice his response was that's because am not understand what his saying and the fees added each month are for phone calls made to me , I asked him why was I phoned because we agreed that I will pay on the 31st of each month and I have been making payment around the 20-24 and which number have they been calling cos am the one whos been calling not the other way around he called out an 073 number and I advised him I only have 1 number and never had any missed calls from them , his response was the fees are how hey make they commission which doesn't make sense like how do you make commission out of a person struggling hence the account was handed over . I will be taking this up aswell with the ombudsman and the recording needs to be listened to . and to top it of the guy told me they don't log formal complaints and he can not log on for me ......