Today I received two identical letters from the COP saying that they had not heard from me regarding my appointment as deputy for my mother's financial affairs and not providing security. My mother died just before they sent the letter appointing me and my step-father as deputies. I sent them a copy of her death certificate by recorded delivery and I have proof that this was delivered. Also with this letter I sent proof that my mother had been on Guaranteed Pension Credits with a form requesting that my step-father received back the £400 that should never have been paid as she was entitled to fee exemption. Six weeks on after receiving no reply I sent an e-mail reminder with copies of the correspondence and proof of delivery of my original letter. I was told it had been passed to a manager then everything went quiet again until I received the letters today. I want to put the upset of my mother's illness and death behind me now and receiving letters like this does not help, especially as they seem to have lost her death certificate. I now have to waste time replying to this; I have no intention of phoning as it will take at least half an hour to speak to someone. I would very much like to deal with one individual at the COP, but that seems impossible. I am now at the point of making an official complaint about the way this has been handled, (or not handled) and would like to know how to go about this.