Can't log into my account. Site says it does not recognize my log in info.

My email has been set up on my iphone for a long time and all of a sudden says wrong password.   when i try to reset it, it asks me for security questions but been so long i dont remember.  Maybe problems on their end.  been calling all day and just given the run around and being hung up on.  i NEED MY EMAILS!!!!! This is BS