"I'm the one who was affected, therefore it was my responsibility to resolve the issue" It wasn't your responsibility - before berating you for not performing

"I'm the one who was affected, therefore it was my responsibility to resolve the issue" It wasn't your responsibility - before berating you for not performing your duties they were responsible to know what those duties were. You needed to resolve it, nobody else was going to, it was not your responsibility. Semantics? Probably.