losing your temper

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was supoosed to have a booking at 10:15, now for the past 45 mins iv told him 17 times where to go, now i've had enough of address finders in the past but he is taking the piss as where i told him to go he was standing 3 ft from the entrance, that was 40 mins ago he's just rang again saying where, i totally flipped swearing at him i know i shouldnt have but i've only got so much patience

anyone else lost their temper before