@robinsonjl3 "If i look into it, one of my clusters is listed twice." If vCenter has more than one MoRef for the same cluster then that might explain the extra usage, however, if this is the case then it the old/extra reference(s) would likely needed to be removed from vCenter database(s) somewhere and you should await an answer from support with guidance/procedure on doing that if that is the case.
Was this cluster recreated at any point?