Lindi should not be working customers, very rude

10 minutes back, I called the Home choice call center number ***) because I have received a statement stating I owe home choice R7000, I don't owe them nothing, the statement is dated 08.12.2015 and the Phillipa bad set was return on 05.12.2015, Lindi attended my call , she was so rude to me I asked for her manager, she made me hold for more than 10 minutes which I eventually gave up and hang up, the fact is there is so many Lindi's at home choice and Home choice is doing nothing about it, I don't owe home choice nothing, someone sort this out before I take you to court.