Customer 53 (ignorant)

This customer is something else, she didn't seem to understand basic communication. She wanted to know why she had to pay $270 to buyout her agreement to be allowed to upgrade. My coworker explains this to her. She didn't get it so being a supervisor i head over and try to explain it to her that she still owes money on this phone, she try's to tell me she bought it out already and i look and i find she bought out her ipad, well that may or may not be a mistake on the individual who processed that that is not my concern. So i explain that to her and kindly ask her because i'm curious i see a black iphone 6, black iphone 6+ on the account under agreements but shes using a gold iphone 6+ but theirs only 2 phones on the account. She flips out yelling theirs only 2 phones not 3 your making a mistake stop messing with my account. I tell her im just looking at her bill i see 2 black phones and in her hand is a gold phone, then she try's to convince me that the gold phone in her hand is black..... not that it was a replacement for the phone which it was but that the phone itself is not gold and white but simply black and grey.... I can not understand why she assumes we are stupid like that but what ever after listening to her bitch for almost 30 min she finally understands the basic information we  provided her with and says oh i only have to pay $270 to upgrade no problem lets do it. Meanwhile i'm sitting here thinking what the hell i told you this as soon as i came over and you flipped out now suddenly its ok, screw you, she wasted our time and kept us at work until 11pm, keep in mind we close at 8 and normally are leaving at 8:30 and she was helped at 7 so it took her almost 4 hours for a process that only takes us about 10-15 min because of her bitching.