No apartment listing service shall give a listing to a customer unless

1. (1) the apartment listing service has verified the availability of the apartment which is the subject of the listing within the preceding seventy-two hours,
2. (2) the listing meets the specifications of the customer as set forth in the contract and
3. (3) the apartment listing service has been authorized by the owner of such apartment or by his authorized agent to give the listing to customers.

(P.A. 81-166, S. 4.)