You've asked if your car has a dodgy gauge but then you tell us that your sender is faulty therefore answering your own question, yes i'm sarcastic but I tend to do that when I read something that obviously answers itself, its like asking if you have a air leak cause your tyre keeps going flat, like it says in my sig, 'if I offend you......unlucky' however cancelling your account is a little extreme.
Merry Christmas.