Trouble

I have a user name alphandomea and the super long password and when I go to dtube to sign in it says there is an error! I am very frustrated with your service so far and will continue to use youtube until you can get your act together! Because when I go to make another account it says THIS PHONE NUMBER HAS ALREADY BEEN USED!!!! Very VERY annoying!!!!!
Please email me whe you know why i cannot sign in with YOUR LONG PASSWORD THAT I WAS SENT and my username!