/tmp Disk Quota Exceeded But Not

Has anyone ever run into this before? We are running into issues with one of our hosting servers, it claims that the /tmp folder has exceeded the disk quota but when you actually go to the /tmp folder it's not at all.

Here are the outputs:

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/simfs 60G 2.4G 58G 4% /

# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/simfs 1500000 80589 1419411 6% /

# du -hs /tmp
8.2M /tmp

# echo 11111111 > /tmp/testfile
# cat /tmp/testfile
11111111

But it still gives a PHP error saying /tmp disk quota exceeded until I completely empty the folder and then it works for a few hours and does the same thing.