There are some important things to know when using a listing service. First, ask if they are licensed and if the rental listings are current. Within five days after you sign the contract, the law requires the service give you a list with at least three currently available rentals. If within the first 15 days of signing the contract you don't receive information on three available rentals, you can demand a full refund from the company. Read your contract, but generally the request for refund must be in writing, must document that listings didn't have available rentals and must be delivered in person or by U.S. Mail (by certified or registered mail). However, you can't get a refund if you found a rental using the service's prepaid rental lists.
If you don't find a rental through the service, or you find a rental through another source the rental listing the service can only keep $50 of the fee you paid. Again, you would need to request the refund in writing, provide proof of the location where you are currently living, the source through which you found the rental and deliver the request in person or via U.S. mail. However, you should note that you can only request such a refund no later than 10 days after the contract has expired.