I was given a ticket for something I was still unfamiliar with at the time, as I was only about 6 months into the job. The thing I was working on was fairly complex in a very specific and niche subject, so it's the kind of thing literally no one would know until you work at this place.

I made the requested changes per the ticket as best as I understood them and fired the ticket back to the BA. Almost a month goes by and the project lead calls me up telling me it wasn't done properly. After going through what the issue is I remark that now I understand better and will update it. He started on a rant about how if I don't know something I should be asking and these kinds of changes shouldn't be left to the last minute only a day before deployment.

I merely replied that it's difficult to ask about something when you aren't even aware of its existence (too hard and too difficult to explain here). But what really set him off was me saying "why am I hearing about this an entire month after I finished the ticket?"

He didn't know what to say and just hung up the call.