No registration shall be revoked nor a fine imposed until after a
hearing has been held before the Commissioner upon at least seven
business days' notice to the person. Such notice shall be served
either personally or by certified mail, return receipt requested,
to the last known address of the person and shall state the date and
place of the hearing as well as enumerate the grounds constituting
the allegations against such person. The person may be represented
by counsel and may produce witnesses on his/her/its own behalf. A
record of the hearing shall be taken and preserved. For the purposes
of such hearing, the Commissioner may administer oaths, take testimony,
subpoena witnesses and compel the production of books, papers, records
or other documents deemed pertinent to the subject of the hearing.
