Please help!!! My washing machine is being weird. It won't drain properly. When it drains the water comes up the plug in the kitchen sink and then drains back into the washing machine. What does this mean? Is there a way to fix it? I really can't afford another one, even a 2nd hand one. I've pulled the filter out of the bottom and it's clean and no water comes out that way. Any advice will be greatly appreciated. TIA