DISGUSTED IN CUSTOMER SERVICE AND BILLING SYSTEM

I received a call from an arrogant lady called Tarryn, saying that I'm in arrears. I asked her for what month because I paid. She then responded saying that I'm in arears I asked again, for which month because I paid, she started to become arrogant and dropped the call in my ear. This is not the first time that I'm receiving bad customer service t Nedbank in one month. I called on 2 July after getting an sms saying I'm in arrears the agent responded saying don't make it my problem if you not paying in time, I told him it's not even the 3rd why are you saying im in arrears. Firstly I'm disgusted in the customer service and secondly I want a breakdown as to how I'm in arrears and a written apology . I called the call centre today where I spoke to ndumiso she said she will call her supervisor I stayed on the line for more than 10 minutes and the phone went dead. is my money not good enough for your people, you can view my payment record I never skipped a month even though I was on maternity last year, I had a payment arrangement but I still paid my full instalment.