Thank you for the responses...I just want to be clear...I am listed as the occupant but the lease is in his name. Isn't that considered my home as well? Should I not have been given notice before the locks were changed?:confused:

Yup...I would ask about that as well.

If ex changed locks, then it is probable that management does not have a key but would be very interested in getting a copy of the entry key. Changing locks without permission of management is a clear lease violation.