Very Appauling customer service

I am livid at the poor customer service and harrassment phone calls i recieved from african bank this morning from the head office in Johannesburg.I only have a last payment due of R308 to pay til im done but the first agent named sharma and has no way of speaking to someone.,my phone then switches off and i get another call from her threatening to put her supervisor on me.I then get called by Robert(the supervisor) i then explain countless times that im paying it tomorrow as we only getting paid on the saturday as per labour law.He then repeats himself countless times and making me more angry which wakes my wife and making her angry and screaming then in turn waking up my kids.What customer service is that....I am very disgusted at the customer service training these two agents recieved because you really need to train your staff better.I know not everyone has their rude manner of speaking to ppl as i did make arrangements with an african bank agent earlier in the week about the payment.