Trying to use the REPLACE function in a calculated column to remove "&"

have some departments in a column called Dept which contain "&" and would like to remove the "&" plus a space.  Don't have experience with these types of commands but found the below example (which didn't work in my case).  Does anyone have experience with the REPLACE command and can help me out??

Thanks,

=IF(ISTEXT(FIND("& ",[DEPT])),REPLACE([DEPT],FIND(“& ",[DEPT]),2,""),[DEPT])

Basically for example:

Customer Care & Service to Customer Care Service
Brand & Creative to Brand Creative