RUDE!!!

I have an account outstanding which I am getting my medical aid to sort out. ITC calls me on the 2nd October 2015 the lady was very nice and I explained too her I am in talks with my medical aid to why the account has not been paid yet lady said ok not a problem I will call you in 10 days to follow up. On the 5th October 2015 I get a call from another lady at ITC and I said I spoke to you guys already and you guys were gona call me after 10 days she was abrupt bit rude and put the phone down. Then on the 6th October 2015 I get a call again this time this lady thinks she's the queen absolutely rude when I told her you guys called me yesterday she screaming saying I am calling her ****. TELL YOUR CALL CENTER STAFF TO HAVE MANNERS AND SPEAK PROPERTLY TO PEOPLE. I will like a full apology for this behavior.