DECEASED RECEIVES SUMMONS

i have been dealing with Nashua Mobile regarding the Death of my Dad since July 2014. i have submitted the death certificate, I.D copy and a letter stating that my dad is now deceased and that the account should be closed. it went on deaf ears as we have been receiving calls and they have been asking to speak to my dad regarding his account. i have submitted the documents time and time and explained to the callers my dad is deceased. what incompetency is this. and the cherry on the top the account has now been handed over to Norman Bisset &amp