worst service ever

Guy phones me tells me my account is over the limit I must make payment he asks me what date I responded by saying 30days he then forces me to commit to what he want with a specific date and if I don't there will be consequences. This comes after I have loyalty towards the bank and has always made payment and never miss a payment. Nedbank thinks they don't need customers and trys to reprimand you I do not have time for nedbank anymore to think I pay for service such like this please remember you are not the only bank out there and I did not commit a crime or I will not disappear of the face of the earth 8 year's later