Very bad service from capitec and its consultants

I have an access facility with capitec for which I am paying R2116 but from next month I will be paying R2660.I called them to ask why(and the consultants are so rude)I spoke to mare than 7 consultants asking them to for me why my installments is going to go up by R500 and none of them were able to tell me the reason.They even transferred me to collections department and they were also unable to tell me the reason.One of them even went as far as to tell me that the reason why my installment went up is because I have a por credit profile.That is like an insult to me because my profile at ITC is up to date.There is also a lady at their collections department who is so rude that she dropped the call while I was busy explaining my issue.None of them is able to tell me why my installment is going up by R500.I want to close all my accounts with them because they just want to debit your money without the reason.This is like *****ing