SENDING MY CONFIDENTIAL INFORMATION TO MY COLLEAGU

This lady by the name of AYANDA calls me to tell me that my account is in arrears and that I need to make a payment immediately and she explains the whole credit bureau thing then she asks do u understand I said yes.i wanted her to first finish saying what she called me for then, cz I had a complaint myself, I then asked her, if she could breakdown the arrears amount for me then she RUDELY said no that amount is generated by the system, I then went on to say if they can call me on my number everyday why is it that they are sending my colleague my account information ( which I believe is supposed to be CONFIDENTIAL) because clearly they do have my number but they only know to use It when they have to harass me for money but the amount that I owe they sms to my colleague, SHE then again RUDELY said that is IRRELEVANT. really???? that is irrelevant??? I think it's my business to know how much I owe CAPIN not that of my colleague's and it is her DUTY or RESPONSIBILITY to explain any uncer*****ies to me regarding my loan, I am utterly DISGUSTED by her attitude and think she must go back for training on customer services.