Invoiced for what services?!!

We have been receiving invoices from Chubb but we have never entered into any contract with them for security services! The invoices are made out to a company where the owner had passed (my Dad) 2 years ago yet your invoices start August 2014?! <br> All avenues to have this sorted have lapsed and you cannot show us who signed this apparent contract signed by a deceased individual.<br> If this does not get sorted I shall have my father's estate attorneys take over and costs will be recovered from Chubb.