Customer abuse on a Higher Grade level

due to the fact that my account is in arrears with a R60 , i received a very rude call from one of your call centres at the credit department today , informing me that i must pay my account as the last time i did make a payment was January 2015,which in truth is correct , as i did settle the account in January 2015 and did have a credit balance of R3.95 on my account. A purchase was made in August 2015 and i did not received an account for August as the one i have is still showing R0,00 due for August 2015. This rude , utterly disrespectful, unprofessional , egotistical ,arrogant and unwise lady from the call centre call me to asked me when will i pay my account, didn't't i knew that you must pay after a purchase has been make and argue the point when i asked her whether she had check her facts right , as i did not have account since January 2015 to pay , but she insist the last time i pay my account was in January 2015. So please Hr(recruitment section), kindly hire professional and humble people , who will boost your business as a whole and make you receive Complimentary reports as supposed to this complaint of one of your staff members,who lack manners and have no respect for