call centre agent bad attitude

I got a call from a call center agent concerning my account. During the course of the call the line got cut off. She called seconds later with attitude asking \why did you drop my call? If u paid your account I wouldn't be calling u"I asked to speak to her manager and she explained that he's in a meeting and I should call back after 30 minutes. I asked why doesn't he call me back and she said managers don't call customers."""