My bush washer keep s filling up with water in the drum when the washer isn't in use

SOURCE: Water Just Keeps Filling!

replace the water inlet valve, the valve that the black hat and cold lines connect to

SOURCE: washer won't fill

On the drain valve there must be some dirt that does not let the valve close or the valve must be defective and needs to be replaced. By the way you did not mention the make of the washer.

SOURCE: water keeps filling in washer

Sounds like you need a new water valve (some debris inside the valve causing it to not fully close). These are availible from your local appliance parts store or on line from the manufacture. Once you have your replacement, just take the #20 torx screws out of the rear of the top panel slide the whole panel slightly towards the rear and lift it off. On the outside of the washer on the back panel, You should a light blue plastic thing that the 2 matching hoses from your house connect to. Turn your water off and remove these hoses. Just beside them you will find another #20 torx bit screw (some models use a #10 or #15). Remove this screw as well. Now from the inside of the machine, you will see 4 blue wires going into 2 connectors on the valve. Remove these connectors only by pulling on the connectors, not the wires. Lastly you will see a small black hose with a green or silver clamp on it. Squeeze the clamp with a pair of pliers and then slide it down the hose. The hose should now pull free of your old valve.
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SOURCE: Washer keeps draining

Sounds like you may have a siphoning problem. The following link explains:

http://www.fixya.com/support/r587481-prevent_washer_siphoning

Double check your installation and drain hose placement. You need to ensure you have an air gap to break the suction caused by the drain line. In the event that this is not a simple siphoning issue, please let me know if you require additional assistance. I hope this helps you.

SOURCE: kenmore he3 series washer keeps filling with water when not in use

Remove the 3 screws at the back of the machine that hold the top on. pull back on the top and lift the top off. Remove the hose from the inlet valve and remove the screw that holds the inlet valve.