Why I hate my job

"Is this account still open? I cancelled it way back in February. I can't believe you've been charging me this whole time!"

"Mr. F, I can cancel this account for you today, since I don't see it was cancelled before."

"I called in February and cancelled it, emphatically!"

"Sir, this account hadn't even been opened yet in February. You didn't purchase your phone until April."

The conversation went downhill from there.