13. Unlicensed persons not to recover fees, etc.
(1) Subject to this Act, a person is not entitled to sue for or recover or retain any commission, fees, charges, reward or other remuneration for or in respect of any service done by him as a debt collector, unless ¾
(a) he was a licensee at the time of the doing of that service;
(b) his engagement or appointment to act as debt collector in respect of the service is in writing signed by the person on whose behalf the service is to be done or his agent or representative; and
(c) the commission, fees, charges, reward or other remuneration for, or in respect of, the service are included in and not in excess of the commission, fees, charges, reward or other remuneration agreed upon by the person acting as a debt collector and the person on whose behalf the service is done.
(2) This section does not apply in relation to any such service done by a debt collector before the expiration of 3 months after the coming into operation of this Act.