RentWise Team: The RTB generally treats a tenant or landlord complaint as a dispute application. First, gather your tenancy agreement, rent records, notices, messages, photographs and any other relevant evidence, then use the RTB’s online dispute-resolution service to select the issue, enter the parties’ details and submit your application. You may be offered mediation or asked to proceed to adjudication, and the RTB will explain any applicable fee and deadlines. Keep copies of everything and follow the RTB’s instructions; the outcome is ultimately decided through its dispute-resolution process based on the facts of the case.