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A running cistern is not always a blocked toilet
Water heard entering a cistern long after a flush often points to a fill valve that does not shut correctly, an incorrectly adjusted float, or a flush seal that allows water to escape into the bowl. If the tank is refilling intermittently, the problem may be invisible until the water bill arrives. We check where the water is moving before recommending a replacement part.
A toilet that flushes weakly is a different job. The cistern may not be releasing enough water, the flush mechanism may be misadjusted, or waste flow may be restricted downstream. Repeated plunging will not solve a mechanical cistern defect. We distinguish the flush volume, the pan outlet and the drain connection so that the repair addresses the right component.