I don't know how your office was setup but ours is a complete zoo.
It's 100% open concept with about 4-5ft high dividers. The noise is insane. It's horribly distracting.
The only way I get any work done is jacking into my cellphone for music to block all the annoying chatter out. If this was the only problem you might be able to say it was just bad design.
Another problem is interrupts. People constantly ask me stupid questions when they can see me instead of following the process and opening a ticket. If I put my headphones in and ignore them (yes, I see you there, I don't care about your stupid question so I'm pretending I don't) they will wave a hand in front of my eyes or touch me. And yes give them shit if they interrupt me for something stupid.
I'm allowed to work 1-2 days a week from home and those are the ONLY days I get a reasonable amount of work done.