Last night I had flushed the toilet and it happened again. I turned on the cold water at the sink and it went away, while the sink was on, I then turned offthe cold and turned on the hot and it went away. But as soon as I turned the hot off, the toilet was still filling up, the noise came back. It seems the only way to stop the noise, is to turn on another water source, and turn it off very very slow. Help, my poor daughter is starting to fear every time we turn on the water.