A dispute has arisen with a neighbour, who is also the user's sister, regarding house construction. The sister previously built her home without the required setback from the user's land. Now, she is demanding a setback from the user's new construction and is actively disrupting the building work. While amicable settlement is advised, legal avenues include complaining to the municipality, seeking a court injunction, or filing a criminal complaint for nuisance if the interference persists.