Apart from one phone call to them when i apologised first and asked for another number as i couldnt understand a word the guy was saying i have found dealing with HMRC very easily on the phone each time it was their mistake and the last time the woman said i am raising a managers complaint for you as we cant keep messing you about like this .
Never heard from them again so she obviously got it all sorted .At the time hmrc used 3 computer systems one in scotland one in england and one in northern ireland and basically data put into one didnt always transfer to the other systems