quota reportList of Quota and mailbox size

Hi we are running groupwise 18.1 on SLES 11SP4.

This weekend some job caused a lot of trouble. The quota of all users have changed - or the
size of the mailbox. So a lot of users can not use there mailboxes, because they are over quota!

1) How can we generate a list containing the mailbox size and the quota as csv ?
 (I only found an article selecting users according to their mailbox size, but the report does not contain the size ...)

2) Can the quota be set using a script ?