Final answer:
A tenant can file a complaint with a local housing authority or tenant board if they experience illegal entry, unreasonable interference, or harassment by their landlord. This can lead to a formal hearing and potential orders against the landlord.
Step-by-step explanation:
When a tenant encounters illegal entry, interference with reasonable enjoyment of the unit, or harassment by the landlord, they can file a specific legal application to address the issue. This typically involves lodging a complaint with a local housing authority or tenant board, which handles landlord-tenant disputes. In most jurisdictions, this process is formalized and the tenant needs to submit a form detailing the instances of the landlord's breaches of tenancy laws. The complaint may result in a hearing where both parties can present their case, and the board or authority can issue orders for the landlord to cease the disruptive behavior and possibly award damages to the tenant for any suffering or losses incurred.