Freeradius/MySql problem

I currently run ver.0.9.3 I have MySql database that is used with FreeRadius. What were are having a problem with is that if the user logs in with UPPER-NAME or lower-name either one works. I have tried lower_user & lower_pass before/after/no and the radius system still authenticates all UPPER-CASE. With this we are getting double billed by our wholesale provider because they run unix based also and it sees both as valid log ins because we authenticated them. When we built our MySql we use with the setup in FreeRadius. Has anyone else had this and how did you fix this to keep everyone lower case. Thanks Bob Ross