Paulyne

Hi I received a P800 notice from HMRC saying I was due a tax refund and a cheque was being sent to Brooksdale Limited. I do not recall signing any papers to make these my agents, but HMRC say they have something on file from them. I must have inadvertently filled in a form without realising what it was really for, thinking it was for something else. Has anyone else had experience of this and can I now request HMRC to remove this company from my file and deal directly only with m? Also why did not HMRC contact me prior to sending them the cheque as I believe I have been scammed by this company and am not sure what document HMRC have on file or even if I signed it!