Incorrect repo size - reached 2GB hard limit but repo is less than 600 MB

Hi, we've reached the hard limit on one of our repositories this morning and can't push changes. 100+ people are blocked today.

git pull
git gc
git count-objects -vH

count: 734
size: 6.94 MiB
in-pack: 752101
packs: 2
size-pack: 551.68 MiB
prune-packable: 0
garbage: 0
size-garbage: 0 bytes

Please help!!!