In Office 365, 9 of ~130 user accounts are assigned the license Office 365 Enterprise E3 which, according to https://technet.microsoft.com/en-GB/library/exchange-online-limits.aspx#StorageLimits, should assign storage quotas of 100 GB to the corresponding user mailboxes but is actually assigning storage quota of 2 GB.
I couldn't find anything relevant online, hence this post.