Very rude call centre at ABSA Home Loans

Not Happy with Customer Service at Home loans department, I contacted them regarding the new VAT of 15% to find out what my instalment will be each month so that I can make sure that I have the correct amount in my account I spoke to a lady called Patricia what a rude lady, she said she cannot tell me anything as they only heard about it today the budget speech was last month so is shows me that she cannot do her work in the 1st place, she refused to give me information and informed me that the bank will give me a notification my problem is that my payment is going off on this Sunday and I need clarification to do so, I requested her that I can speak to a supervisor regarding her attitude and I waited for a long time, I suggest if she cannot talk professional to a customer remove her then from her post I hanged up as I could not wait longer for the supervisor. Please can somebody please provide me with the correct information.