i tried to open the upper half of the coffee machine inorder to rinse the warter container. But wasnt able to. I pushed the black rubber (which popps out of thelittle hole)in the water container and it got pushed inside. I did this thinking the upper half of the machine would come off.. but it didnt. I then tried to clean the coffee maker by adding only water and no coffee. BUt now the water is not flowing into the coffee jar and there is a loud noise coming from the machine. Pls help.