I'm getting really fed up with these people.
I've got a penalty notice in, but I submitted my return online the 13th of December, and have got the receipt to prove it. Unbelievable.
When I first went self employed, they even had two duplicate me's on their system, one with a letter difference in my name. Even got two tax returns, really wondering if something went wrong with that? Don't think it did, because I've sorted that out.
So I'm gonna have to write a letter, and appeal. Like I don't have other things to do.