Hi I managed to get through on the phone and pay £79 to complete a gap in my pension for year 13/14. The guy gave me a reference and the hmrc payment details and asked me to complete the payment via bacs through my bank putting in the long reference which I did. The next day I received a letter from HMRC titled ‘demand for national insurance contributions’ asking me to pay by cheque. I used the letter to write back to HMRC saying I’d already paid but have heard nothing. Today I have received another demand letter asking me again to pay by cheque. My record has not been updated and I can’t get through on the phone. Is anyone else receiving these demand letters? HMRC please advise.