If you are activating a device with an EXISTING BES account, then BES will send any data it has for "that user" including call log history, font settings, display settings, and so on and so forth. BES wirelessly backs up devices, so that if you EA a new device for a user, they get "their settings" on it.
Wiping and reactivating the phone will not help, the settings are on BES.
To get a "clean" EA, delete the user account from BES. Give BES enough time to purge all data. Re-add the user to BES. Wipe the phone, EA it. All clean.
: Infrastructure Architect, Denver CO